Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/16/2013 5:38 PM, Lisi Reisz wrote:

On Wednesday 16 October 2013 16:27:00 Jerry Stuckle wrote:

Which is also why Universities require about 3/4 of the course
hours be outside of your major.


Which is to say:  "Which is also why the Universities *in the USA*
require..."

Lisi




Yup, U.S, universities give a rounded education - which is why they are 
so popular with students from around the world.  We have a huge number 
of foreign students wanting to attend them.


Jerry


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Re: 64-bit VM on 32-bit host OS on 64-bit hardware

[Stefan Monnier]

> Can you run an amd64 virtual machine if the host is running
> Debian i386 ?

I wouldn't expect it to work if the bottom kernel is i386.
But if the bottom kernel is amd64 (which can be used just fine nowadays
with a 32bit userland), it can be made to work.


Stefan


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Re: gnome depends on adblock-plus

[Stefan Monnier]

> 1: In fact, I think that meta-packages should only have recommendations and
> suggestions, since they are automatically installed by a default Debian
> configuration.

I agree that Debian's dependency management would benefit from some
extra refinements.  The above suggestion is not quite sufficient, since
for those users (like me) which don't want to auto-install
recommendations, it means that "aptitude install gnome" becomes a no-op,
whereas the user's intention is very clearly different.

So, my take on it is that Debian should add a new sort of dependency
(call it "important"), which is stronger than a "recommendation", but
which the user can disable.  But she couldn't disable them all-at-once
like "recommendations", instead she would have to disable them one at
a time.

Further along this route, I'd like APT to let me specify the packages
I want declaratively, with a file in which I list:
- the packages that need to be installed (equivalent to the packages
  that are marked as manually installed rather than auto-installed as
  part of dependencies).
- the dependencies that should be ignored/overruled.
- the "pin  to version " (where  ideally could also be
  "stable", "testing", ...).
- plus more constraints like "stay away from " (so that if  is
  needed by some chain of dependencies, then I want APT to give me an
  error rather than to install it, so I can try and work around the
  problem).


Stefan


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Re (3): CF-Firewire adapter

[peasthope]

*   From: peasth...@shaw.ca
*   Date: Wed, 31 Dec 2003 18:07:42 -0800
http:/carnot.yi.org/UnityDigitalCF.Firewire.jpg

Should be
http://carnot.yi.org/UnityDigitalCF.Firewire.jpg

Sorry,   ... Peter E.




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Re (2): CF-Firewire adapter

[peasthope]

From:   Doug 
Date:   Wed, 16 Oct 2013 19:25:17 -0400
> Why do you believe the problem is with the adapter 
> and not with the enclosure/drive? 

The "drive" is a Compact Flash card.  There are two CF cards here 
which work in CF-PATA adapters in other machines.  The CF cards 
are good.

(CF-Firewire adapter) = (enclosure).  It is everything in the photo 
except for the CF card; and only the edge of the CF is visible.   The 
CF-Firewire adapter plugs into a socket on a Firewire-PCI adapter. 
I should have put a ruler in the photo for scale.  This computer has 
wheezy by the way.

> I assume the same enclosure/drive works fine on other
> systems ideally connected through Firewire?

The same failure happens when the (CF-Firewire + CF card) is connected 
to the Firewire socket on another machine running squeeze.  I've 
never seen this adapter work.  It was given to me by someone who 
probably used it under MS Windows.  

> Have you been able to try out other Firewire devices with this adapter?

A Fire-i camera works nicely for Coriander on both machines.  No evidence 
of any problem with a Firewire socket on either machine.

> If so, I assume they too can't be used?

The CF-Firewire adapter and the Fire-i camera are the only 1394 devices I 
have.  The camera works everywhere.  The adapter works nowhere.  To my 
reasoning the problem is in the CF-Firewire adapter in the photo.

Too bad nobody else has mentioned successful operation of something with a 
LSI SYM13FW501 chip.  

Any further discussion is welcome, thanks,   ... Peter E.




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Re (2): CF-Firewire adapter

[peasthope]

From:   David Guntner 
Date:   Wed, 16 Oct 2013 16:33:01 -0700
> You *seriously* need to take a look at your system clock :-)

Thanks.  This afternoon the machine was down for cleaning for the first time 
in years.  When it was running again, I forgot to reset the clock.  Should be 
within less than a minute now and chrony can take over, ... Peter E.


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Re: LAN Recognition Problem

[Thomas H. George]

On Wed, Oct 16, 2013 at 08:58:36PM +0100, Karl E. Jorgensen wrote:
> Hi
> 
> On Wed, Oct 16, 2013 at 01:53:52PM -0400, Thomas H. George wrote:
> > I have two computers connected to the LAN, one my desktop running Wheezy
> > and the other a RaspberryPi running Wheezy-Raspbian.
> > 
> > The RaspberryPi can successfully ping all the devices on the LAN, the
> > desktop, the printer, the gateway.  It immediately found the desktop's
> > hostname and sucessfully pings it by hostname.
> 
> Sounds like your desktop advertises itself with e.g. avahi, and the
> RaspberryPi picks up on this.
> 
> > The desktop cannot successfully ping the RaspberryPi but can
> > successfully ping the printer and the gateway.
> 
> A couple of questions:
> 
> (1) Are you ping'ing by IP address or by name?  To separate out DNS
> problems from connectivity, it is useful to stick with IP addresses
> first.  If ping by IP address works, then name resolution is a likely
> culprit.
> 
> Either way, it is useful to use ping's "-n" option to avoid confusion:
> the reverse DNS lookup that ping does can impose delays which (to the
> untrained eye) can look like lack of ping responses
> 
> (2) Is there a firewall on the RaspberryPi ? It may block incoming
> pings...  Even when a device does not respond to ping, its presence
> can still be detected by looking at the arp cache, as it *must*
> respond to arp requests[1]. The lack of an arp response is a good
> indication of lack of physical connectivity:
> 
>   root@RaspberryPi# ping -c 5 -n ${ip-of-desktop}
>   ... wait for ping to give up
>   root@RaspberryPi# arp -an
> 
> If the target IP address appears in the arp cache, then it *is* on the
> network. If it still does not respond to ping, then ping responses may
> be disabled or firewalled.
> 
> (3) Have you checked for IP address collisions?  If two or more
> devices have the same address weird things happen.  It is worth
> cross-checking that the devices see each other with the expected MAC
> address by checking their respective arp caches.  (But don't bother
> with this until all else fails - it cumbersome).
> 
> > I realize this may be a problem with Wheezy-Raspbian and have posted the
> > problem to the RaspberryPi troubleshooting forum.  As yet the only
> > response was to question whether the difficulty might be a firewall on
> > the desktop. I have not installed a firewall on the desktop.
> 
> [1] Yes. I know. There are weird corner cases where arp responses
> undergo severe filtering in the name of security. I do not expect that
> to be the case here.
> 
> Hope this helps
> -- 
> 
Thank you for your comments.  While they did not solve my problem they
made me face up to it and find a correction.  In addition I learned a
little bit about arp which I had never used before.

The problem was as follows:  I live in an apartment in the far corner of
the house and have strung an ethernet cable from the wireless router
which connects to the internet to my apartment. For historical reasons
the wireless route that connects to the internet has the gateway address
192.168.2.1 (When this system was set up years ago Verizon used
192.168.1.1 for their modem and we had a firewall computer behind their
modem which relayed 192.168.2.1 to 192.168.1.1)
> 
In my apartment I have a five port ethernet switch. 
One port for the cable to the wireless router
One port for my desktop
One port for my printer
One port to continue the cable to a pc in the room below
One port free

Then I acquired a tablet, the original HP tablet.  The wireless signal
from the other end of the house didn't reach me. So I added another
wireless router but you can't do that.  The new wireless router has
three ethernet ports so I connected one of these ethernet ports to the
open port on the five port switch and let this router have the address
192.168.2.1!  Works beautifully.  The tablet upgraded to Android
courtsey of cyanogen connects to wirelessly to the new router and via
the ethernet cables and switch to the old router and so to the internet.

Now I have a RaspberryPi.  I innocently ran an ethernet cable from the
Pi to an open port on the new switch.  Result: Using gateway 192.168.1.1
Pi can talk to everyone on the LAN and can reach the internet via the
old wireless router but no one on the LAN can reach the Pi.

Solution: Pull the ethernet cable to the pc downstairs from the five
position switch and connect Pi in its place.  Now using gateway
192.168.2.1 Pi can talk to everyone on the LAN and everyone on the LAN
can talk to Pi.

Of course I put the ethernet cable to the computer downstairs to an open
port on the wireless router.  I have no idea whether that will work but
who cares.  The only thing down there is a cheap Windoze laptop
connected to the TV in case someone wants to watch Netflix.  No one has
bothered in months.

Tom
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> Arch

Re: CF-Firewire adapter

[Gregory Nowak]

On Wed, Dec 31, 2003 at 06:07:42PM -0800, peasth...@shaw.ca wrote:
> A photo of a CF-Firewire adapter here.
> http:/carnot.yi.org/UnityDigitalCF.Firewire.jpg
> I removed the cover in case anyone is interested.  The two largest chips 
> are marked LSI SYM13FW501 and Winbond W27E010P-70.
> 
> When the firewire plug is connected, dmesg gives the following.
> fdisk -l yields nothing about the device.
> 
> Is anything short of work on the driver likely to make this adapter operate?

Why do you believe the problem is with the adapter and not with the
enclosure/drive? I assume the same enclosure/drive works fine on other
systems ideally connected through firewire? Have you been able to try
out other firewire devices with this adapter? If so, I assume they too
can't be used?

Greg


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Re: CF-Firewire adapter

[Doug]

On 12/31/2003 09:07 PM, peasth...@shaw.ca wrote:
> A photo of a CF-Firewire adapter here.
> http:/carnot.yi.org/UnityDigitalCF.Firewire.jpg
> I removed the cover in case anyone is interested.  The two largest chips 
> are marked LSI SYM13FW501 and Winbond W27E010P-70.
> 
> When the firewire plug is connected, dmesg gives the following.
> fdisk -l yields nothing about the device.
> 
> Is anything short of work on the driver likely to make this adapter operate?
> 
> Thanks,... Peter E.
> 
> ===
> [ 2127.727949] firewire_core: skipped bus generations, destroying all nodes
> [ 2128.224257] firewire_core: rediscovered device fw1
> [ 2128.224299] firewire_core: phy config: card 2, new root=ffc1, gap_count=5
> [ 2131.234125] firewire_core: giving up on config rom for node id ffc0
> [ 2171.962587] firewire_core: skipped bus generations, destroying all nodes
> [ 2172.461296] firewire_core: rediscovered device fw1
> [ 2172.461335] firewire_core: phy config: card 2, new root=ffc1, gap_count=5
> [ 2175.524876] scsi5 : SBP-2 IEEE-1394
> [ 2175.524994] firewire_sbp2: Workarounds for fw2.0: 0x1 (firmware_revision 
> 0xa0b832, model_id 0x00)
> [ 2175.525004] firewire_core: created device fw2: GUID 00a0b8005000, 
> S400, 1 config ROM retries
> [ 2176.372964] firewire_sbp2: fw2.0: logged in to LUN  (0 retries)
> [ 2176.377064] scsi 5:0:0:0: Direct-Access LSILogic SYM13FW500-Disk  1.00 
> PQ: 0 ANSI: 0
> [ 2176.378556] sd 5:0:0:0: Attached scsi generic sg3 type 0
> [ 2176.381845] sd 5:0:0:0: [sdb] 1000944 512-byte logical blocks: (512 MB/488 
> MiB)
> [ 2176.384615] sd 5:0:0:0: [sdb] Write Protect is off
> [ 2176.384622] sd 5:0:0:0: [sdb] Mode Sense: 10 00 00 00
> [ 2176.386164] sd 5:0:0:0: [sdb] Cache data unavailable
> [ 2176.386171] sd 5:0:0:0: [sdb] Assuming drive cache: write through
> [ 2176.393377] sd 5:0:0:0: [sdb] Cache data unavailable
> [ 2176.393383] sd 5:0:0:0: [sdb] Assuming drive cache: write through
> [ 2207.072560] firewire_sbp2: fw2.0: sbp2_scsi_abort
> [ 2217.073225] firewire_sbp2: fw2.0: sbp2_scsi_abort
> [ 2217.073435] sd 5:0:0:0: Device offlined - not ready after error recovery
> [ 2217.073453] sd 5:0:0:0: [sdb] Unhandled error code
> [ 2217.073457] sd 5:0:0:0: [sdb]  Result: hostbyte=DID_BUS_BUSY 
> driverbyte=DRIVER_OK
> [ 2217.073463] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
> [ 2217.073475] end_request: I/O error, dev sdb, sector 0
> [ 2217.073484] Buffer I/O error on device sdb, logical block 0
> [ 2217.073552] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073599] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073619] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073637] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073646] ldm_validate_partition_table(): Disk read failed.
> [ 2217.073660] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073677] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073695] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073712] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073721] Dev sdb: unable to read RDB block 0
> [ 2217.073735] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073752] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073780] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073792] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073809] sd 5:0:0:0: rejecting I/O to offline device
> [ 2217.073817]  sdb: unable to read partition table
> [ 2217.073977] sd 5:0:0:0: [sdb] Attached SCSI removable disk
> ===
> 
> 
> 

Did you really post this over nine years ago? It's dated
12/31/2001 09:07 PM. Someone must have solved this by now!

--doug

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CF-Firewire adapter

[peasthope]

A photo of a CF-Firewire adapter here.
http:/carnot.yi.org/UnityDigitalCF.Firewire.jpg
I removed the cover in case anyone is interested.  The two largest chips 
are marked LSI SYM13FW501 and Winbond W27E010P-70.

When the firewire plug is connected, dmesg gives the following.
fdisk -l yields nothing about the device.

Is anything short of work on the driver likely to make this adapter operate?

Thanks,... Peter E.

===
[ 2127.727949] firewire_core: skipped bus generations, destroying all nodes
[ 2128.224257] firewire_core: rediscovered device fw1
[ 2128.224299] firewire_core: phy config: card 2, new root=ffc1, gap_count=5
[ 2131.234125] firewire_core: giving up on config rom for node id ffc0
[ 2171.962587] firewire_core: skipped bus generations, destroying all nodes
[ 2172.461296] firewire_core: rediscovered device fw1
[ 2172.461335] firewire_core: phy config: card 2, new root=ffc1, gap_count=5
[ 2175.524876] scsi5 : SBP-2 IEEE-1394
[ 2175.524994] firewire_sbp2: Workarounds for fw2.0: 0x1 (firmware_revision 
0xa0b832, model_id 0x00)
[ 2175.525004] firewire_core: created device fw2: GUID 00a0b8005000, S400, 
1 config ROM retries
[ 2176.372964] firewire_sbp2: fw2.0: logged in to LUN  (0 retries)
[ 2176.377064] scsi 5:0:0:0: Direct-Access LSILogic SYM13FW500-Disk  1.00 
PQ: 0 ANSI: 0
[ 2176.378556] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 2176.381845] sd 5:0:0:0: [sdb] 1000944 512-byte logical blocks: (512 MB/488 
MiB)
[ 2176.384615] sd 5:0:0:0: [sdb] Write Protect is off
[ 2176.384622] sd 5:0:0:0: [sdb] Mode Sense: 10 00 00 00
[ 2176.386164] sd 5:0:0:0: [sdb] Cache data unavailable
[ 2176.386171] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[ 2176.393377] sd 5:0:0:0: [sdb] Cache data unavailable
[ 2176.393383] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[ 2207.072560] firewire_sbp2: fw2.0: sbp2_scsi_abort
[ 2217.073225] firewire_sbp2: fw2.0: sbp2_scsi_abort
[ 2217.073435] sd 5:0:0:0: Device offlined - not ready after error recovery
[ 2217.073453] sd 5:0:0:0: [sdb] Unhandled error code
[ 2217.073457] sd 5:0:0:0: [sdb]  Result: hostbyte=DID_BUS_BUSY 
driverbyte=DRIVER_OK
[ 2217.073463] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 2217.073475] end_request: I/O error, dev sdb, sector 0
[ 2217.073484] Buffer I/O error on device sdb, logical block 0
[ 2217.073552] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073599] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073619] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073637] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073646] ldm_validate_partition_table(): Disk read failed.
[ 2217.073660] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073677] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073695] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073712] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073721] Dev sdb: unable to read RDB block 0
[ 2217.073735] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073752] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073780] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073792] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073809] sd 5:0:0:0: rejecting I/O to offline device
[ 2217.073817]  sdb: unable to read partition table
[ 2217.073977] sd 5:0:0:0: [sdb] Attached SCSI removable disk
===



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Re: Debian sid and AMD/ATI Richland [Radeon HD 8670D]

[MRH]

On 09/10/13 23:05, MRH wrote:

Hi,

I'd need some help with ATI GPU. Is it correct that for that processor
(AMD A10 6700 - with integrated Radeon HD 8670D) I need flgrx non-free
drivers to enjoy 3d support (ie to get Gnome 3 working - at the moment
it goes to the fallback mode). I've got xserver-xorg-video-radeon and
mesa libraries installed.

If I understand correctly, it should change with linux kernel 3.12 which
will support this GPU?

What should I install?

Debian sid, AMD64.



*bump*

Anyone with AMD / ATI / Radeon, please?

Kind regards,
Michal
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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Lisi Reisz]

On Wednesday 16 October 2013 16:27:00 Jerry Stuckle wrote:
> >> Which is also why Universities require about 3/4 of the course
> >> hours be outside of your major.

Which is to say:  "Which is also why the Universities *in the USA* 
require..."

Lisi


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Re: Jessie Minimum Kernel Requirement

[Tom H]

On Wed, Oct 16, 2013 at 12:30 PM, Dmitrii Kashin  wrote:
> Florian Lindner  writes:
>>
>> I plan to use Debian on a virtual server where I can't control the
>> kernel version, that is 2.6.32.
>>
>> What is the minimum kernel version for the upcoming Jessie?
>
> I am using Jessie with the kernel from Wheezy. Don't worry, it's safe to
> upgrade.

The OP wants to use the Squeeze kernel and the Jessie userspace.


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Re: dvd Jessie images

[Bob Proulx]

andrey.ry...@bilkent.edu.tr wrote:
> > http://www.debian.org/CD/faq/#not-all-images
> Thanks!!
> It seems this is the best answer ))

Just to show how easy jigdo is let me show an example.

  # apt-get install jigdo-file

  $ mkdir jigdo-stuff
  $ cd jigdo-stuff
  $ jigdo-lite --noask 
http://cdimage.debian.org/debian-cd/7.2.0/amd64/jigdo-dvd/debian-7.2.0-amd64-DVD-1.jigdo
  ...lots of output and some minutes of time...
  OK: Checksums match, image is good!

  $ ls -ldog debian-7.2.0-amd64-DVD-1.iso
  -rw-rw-r-- 1 3934945280 Oct 16 14:49 debian-7.2.0-amd64-DVD-1.iso

Very easy!  I did the above as I wrote this response to verify that
the process was exactly as I cut and pasted it.  (I also needed to
make a disk image for my own purposes so it was convenient to do.)

The amount of time to download the DVD will depend upon the speed of
your network connection.  It could take a while!  But that would also
be true of a full image.  Jigo caches the files in process and so may
be restarted efficiently if it is stopped and started again.

Bob


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Re: Mouse cursor stays black in Xfce (unstable)

[Nate Bargmann]

* On 2013 16 Oct 14:51 -0500, Slavko wrote:
 
> update-alternatives --config x-cursor-theme

Hi Slavko.

I actually stumbled onto this a few hours ago and I do have my desired
cursor theme working.  I have found that Xfce likewise cannot resize the
cursor everywhere.  I have it set for 32 px and it changes in size as I
move about the screen, but that is minor.

- Nate

-- 

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possible worlds.  The pessimist fears this is true."

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Re: Jessie Minimum Kernel Requirement

[Gregory Nowak]

On Wed, Oct 16, 2013 at 08:30:33PM +0400, Dmitrii Kashin wrote:
> I am using Jessie with the kernel from Wheezy. Don't worry, it's safe to
> upgrade.

As has already been pointed out, the kernel that comes with wheezy is
3.2. The OP stated the kernel being used is 2.6.32, which came with
squeeze. So the fact that squeeze's kernel works with jessy isn't
relevant. Squeeze's kernel works with wheezy from what I've heard, but
I wouldn't expect it to keep working with jessy, even if it does so
now.

Greg


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solved: Re: wpa_supplicant: /sbin/wpa_supplicant daemon failed to start

[Gregory Nowak]

On Wed, Oct 16, 2013 at 10:36:15AM +0200, Gerard ROBIN wrote:
> On Tue, Oct 15, 2013 at 05:33:12PM -0700, Gregory Nowak wrote:
> > Date: Tue, 15 Oct 2013 17:33:12 -0700
> > From: Gregory Nowak 
> > To: Gerard ROBIN 
> > Cc: debian-user@lists.debian.org
> > Subject: Re: wpa_supplicant: /sbin/wpa_supplicant daemon failed to start
> > User-Agent: Mutt/1.5.21 (2010-09-15)
> > 
> > On Tue, Oct 15, 2013 at 01:00:36PM +0200, Gerard ROBIN wrote:
> > > Hello,
> > > (I use wheezy xfce)
> > > I'm not subscribed to debian-user but I have a problem that looks like a 
> > > bug but I do not know which package is concerned.
> > > After last upgrade I get this message at boot time:
> > > 
> > > -8<-
> > > Listening on LPF/wlan0/00:19:7d:02:46:aa
> > > Sending on   LPF/wlan0/00:19:7d:02:46:aa
> > > Sending on   Socket/fallback
> > > DHCPRELEASE on wlan0 to 192.168.0.254 port 67
> > > wpa_supplicant: /sbin/wpa_supplicant daemon failed to start
> > > run-parts: /etc/network/if-pre-up.d/wpasupplicant exited with return code 
> > > 1
> > > 
> > > -8<-
> > > DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
> > > receive_packet failed on wlan0: Network is down
> > > -8<-
> > 
> > What do you get in the logs when this happens as far as wpasupplicant
> > (E.G. /var/log/daemon.log)?
> > 
> > Greg
>  
> it recorded errors: 
> 
> Oct 15 11:24:51 mybox avahi-daemon[3473]: Withdrawing address record for 
> 2a01:e35:2e81:500:219:7dff:fe02:46aa on wlan0.
> Oct 15 11:24:51 mybox charon: 16[KNL] 2a01:e35:2e81:500:219:7dff:fe02:46aa 
> disappeared from wlan0
> Oct 15 11:24:51 mybox charon: 16[KNL] fe80::219:7dff:fe02:46aa disappeared 
> from wlan0
> Oct 15 11:24:51 mybox dhclient: receive_packet failed on wlan0: Network is 
> down
> Oct 15 11:24:51 mybox wpa_supplicant[12248]: ctrl_iface exists and seems to 
> be in use - cannot override it
> Oct 15 11:24:51 mybox wpa_supplicant[12248]: Delete 
> '/var/run/wpa_supplicant/wlan0' manually if it is not used anymore
> Oct 15 11:24:51 mybox wpa_supplicant[12248]: Failed to initialize control 
> interface '/var/run/wpa_supplicant'.#012You may have another wpa_supplicant 
> process already running or the file was#012left by an unclean termination of 
> wpa_supplicant in which case you will need#012to manually remove this file 
> before starting wpa_supplicant again.
> Oct 15 11:24:51 mybox dhclient: receive_packet failed on wlan0: Network is 
> down
> 
> but after reboot my box the problem is gone ? Now this works fine ...

Glad to hear everything got sorted out. I'm sending a cc to
debian-users so everyone there knows this is resolved.

Greg


> 
> Sorry for the inconvenience.
> 
> Thanks for your help.
> 
> -- 
> Gérard
> 

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Re: LAN Recognition Problem

[Joe]

On Wed, 16 Oct 2013 13:53:52 -0400
"Thomas H. George"  wrote:

> I have two computers connected to the LAN, one my desktop running
> Wheezy and the other a RaspberryPi running Wheezy-Raspbian.
> 
> The RaspberryPi can successfully ping all the devices on the LAN, the
> desktop, the printer, the gateway.  It immediately found the desktop's
> hostname and sucessfully pings it by hostname.
> 
> The desktop cannot successfully ping the RaspberryPi but can
> successfully ping the printer and the gateway.
> 
> I realize this may be a problem with Wheezy-Raspbian and have posted
> the problem to the RaspberryPi troubleshooting forum.  As yet the only
> response was to question whether the difficulty might be a firewall on
> the desktop. I have not installed a firewall on the desktop.
> 
> Since both computers use the Wheezy operating system I am posting this
> message on the debian-user mailing list in hopes of getting some clues
> as to the source of the problem.
> 
Wheezy is the current Debian stable distribution, and while a network
stack problem at that level is not utterly impossible, it is
extraordinarily unlikely. 

Asking about a firewall is the correct response, though it is the Pi
which should be the first object of attention, not the desktop. Where
ping is deliberately restricted, it is replying that is prevented, not
sending.

Ping requires routing and hardware to work in *both* directions, which
is sometimes forgotten. If A can get a ping reply from B, then routing
and the physical network path are correct for A *and* B, or at least
adequate for this job. If B cannot get a ping reply from A, then
something is specifically preventing the reply, and that is usually a
firewall. If you had iptables scripts running on both machines you
could log ICMP packets in and out and see quickly what is going on, but
it seems you haven't yet.

If you are certain there is no firewall involved, the first thing to do
is to power cycle everything (not just reboot, and include any network
switch separate from the router) a couple of times. I have to say that
if there is a hardware or initialisation issue here, the Pi is the most
likely suspect.

The next check is whether the TCP/IP configuration of *all* the network
machines is sane and compatible. No duplicated IP addresses, all
netmasks the same. Have a look at the arp tables (sudo arp -a) of both
suspect machines quickly after trying the pings. See if both machines
can see the others' MAC addresses, and that they are consistent.

If you're using the 10. network, the netmask is /8, not anything else.
Yes, I know that's an old one, but Windows 7 still contains Edlin. I've
*seen* very odd networking trouble caused by 10. with other netmasks,
it was a long time ago, but I have no reason to believe it can't still
happen. Some helpful people once hardcoded 10. as a Class A (/8)
network in a few places.

If you're still getting nowhere, it might be time to learn how to drive
Wireshark, after which you will find that the problem is a firewall...

-- 
Joe


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Re: Jessie Minimum Kernel Requirement

[Florian Lindner]

Am Mittwoch, 16. Oktober 2013, 11:46:40 schrieb Florian Lindner:
> Hello!
> 
> I plan to use Debian on a virtual server where I can't control the
> kernel version, that is 2.6.32.
> 
> What is the minimum kernel version for the upcoming Jessie? Can I rely
> on that this does no change after the freeze? (IIRC at Nov 5th)

Basic false assumption was that I read Nov 5th 2013 instead of 2014. So I'll 
stick with wheezy.

FL


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Re: LAN Recognition Problem

[Karl E. Jorgensen]

Hi

On Wed, Oct 16, 2013 at 01:53:52PM -0400, Thomas H. George wrote:
> I have two computers connected to the LAN, one my desktop running Wheezy
> and the other a RaspberryPi running Wheezy-Raspbian.
> 
> The RaspberryPi can successfully ping all the devices on the LAN, the
> desktop, the printer, the gateway.  It immediately found the desktop's
> hostname and sucessfully pings it by hostname.

Sounds like your desktop advertises itself with e.g. avahi, and the
RaspberryPi picks up on this.

> The desktop cannot successfully ping the RaspberryPi but can
> successfully ping the printer and the gateway.

A couple of questions:

(1) Are you ping'ing by IP address or by name?  To separate out DNS
problems from connectivity, it is useful to stick with IP addresses
first.  If ping by IP address works, then name resolution is a likely
culprit.

Either way, it is useful to use ping's "-n" option to avoid confusion:
the reverse DNS lookup that ping does can impose delays which (to the
untrained eye) can look like lack of ping responses

(2) Is there a firewall on the RaspberryPi ? It may block incoming
pings...  Even when a device does not respond to ping, its presence
can still be detected by looking at the arp cache, as it *must*
respond to arp requests[1]. The lack of an arp response is a good
indication of lack of physical connectivity:

  root@RaspberryPi# ping -c 5 -n ${ip-of-desktop}
  ... wait for ping to give up
  root@RaspberryPi# arp -an

If the target IP address appears in the arp cache, then it *is* on the
network. If it still does not respond to ping, then ping responses may
be disabled or firewalled.

(3) Have you checked for IP address collisions?  If two or more
devices have the same address weird things happen.  It is worth
cross-checking that the devices see each other with the expected MAC
address by checking their respective arp caches.  (But don't bother
with this until all else fails - it cumbersome).

> I realize this may be a problem with Wheezy-Raspbian and have posted the
> problem to the RaspberryPi troubleshooting forum.  As yet the only
> response was to question whether the difficulty might be a firewall on
> the desktop. I have not installed a firewall on the desktop.

[1] Yes. I know. There are weird corner cases where arp responses
undergo severe filtering in the name of security. I do not expect that
to be the case here.

Hope this helps
-- 
Karl E. Jorgensen


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Re: Mouse cursor stays black in Xfce (unstable)

[Slavko]

Hi,

Dňa Tue, 15 Oct 2013 09:15:51 -0500 Nate Bargmann 
napísal:

> As there are several layers at work here, which way should I look,
> toward Xfce, LightDM, or Xorg?

I set this a long time ago, but when i proper remember, no one
workaround from web was working, only system-wide settings is working
for me. Take look into:

update-alternatives --config x-cursor-theme

regards

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http://slavino.sk


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Re: Question for you network/DNS/Apache gurus;

[Miles Fidelman]

John,

One more thought... if you continue to have problems, you might consider 
querying either the MediaWiki or Apache lists - sure, a lot of us here 
have set up web servers of various sorts, but specific expertise with 
MediaWiki and virtual hosts are probably easier to find on those lists.


Miles Fidelmn

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Re: Set widescreen resolution in console

[Dmitrii Kashin]

Lisi Reisz  writes:
> On Wednesday 16 October 2013 13:14:06 Chris Bannister wrote:
>> On Tue, Oct 15, 2013 at 09:23:16PM +0400, Dmitrii Kashin wrote:
>>
>> "I am not entirely certain but I don't think it has a number yet,
>> but If it has already then I'd expect it to be Debian 8 or will be
>> Debian 8 when it has."
>
> That is exactly what I meant. 

>> > > would expect it to be Debian 8 eventually.
>> >
>> > You're wrong. It has.
>>
>> That's a bit harsh.
>>
>> IOW, "I believe" appears to be a phrase that a translator would
>> have to be very careful with. :)

Lisi, due to your and Chris' help I understood that it was not a correct answer
in this case, which was caused by my misunderstanding of language.

I alologize for being rude.


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LAN Recognition Problem

[Thomas H. George]

I have two computers connected to the LAN, one my desktop running Wheezy
and the other a RaspberryPi running Wheezy-Raspbian.

The RaspberryPi can successfully ping all the devices on the LAN, the
desktop, the printer, the gateway.  It immediately found the desktop's
hostname and sucessfully pings it by hostname.

The desktop cannot successfully ping the RaspberryPi but can
successfully ping the printer and the gateway.

I realize this may be a problem with Wheezy-Raspbian and have posted the
problem to the RaspberryPi troubleshooting forum.  As yet the only
response was to question whether the difficulty might be a firewall on
the desktop. I have not installed a firewall on the desktop.

Since both computers use the Wheezy operating system I am posting this
message on the debian-user mailing list in hopes of getting some clues
as to the source of the problem.

Tom


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Re: Question for you network/DNS/Apache gurus;

[Miles Fidelman]

John W. Foster wrote:

the site under construction is www.physicswiki.net
the numerical address is 192.65.240.181
the default 'sites-available file is



ServerAdmin webmaster@localhost

ServerName www.physicswiki.net
ServerAlias quark.physicswiki.net   
DocumentRoot /var/www

Options FollowSymLinks
AllowOverride None


Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all


ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/

AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all


ErrorLog ${APACHE_LOG_DIR}/error.log

# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn

CustomLog ${APACHE_LOG_DIR}/access.log combined


Ran a few diagnostics (some of which have been reported by others already):

1. You definitely have to get your DNS records cleaned up.

www.physicswiki.net
resolves to 184.168.221.5
canonical name: physicswiki.net
NOT to 192.65.240.181

184.168.221.5 reverse resolves to
ip-184-168-221-5.ip.secureserver.net
192.65.240.181 has no reverse record listed

2. Fixing the DNS MIGHT be enough
www.physicswiki.net goes to page showing:
Please complete the installation and download LocalSettings.php.
link shows as http://192.65.240.181/mw-config/index.php

http://192.65.240.181/ - goes to same page
http://192.65.240.181/mw-config/index.php goes to mediawiki 
configuration page
- strangely, clicking through the link from the main page seems to 
alternately give a blank page and the configuration page - might be a 
caching thing


So... it's probably NOT a NameVirtualHost issue - as the static IP 
address seems to work


I do find the line about "LocalSettings.php not found" suspicious - 
though that might not be created until you work through the 
configuration steps.


Miles Fidelman

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Re: dvd Jessie images

[andrey . rybak]

> http://www.debian.org/CD/faq/#not-all-images
Thanks!!
It seems this is the best answer ))


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Re: dvd Jessie images

[andrey . rybak]

> andrey.ry...@bilkent.edu.tr writes:
>
>> Where i can find all 10 official dvd images?
>
> Why do you think it should be 10 dvd images?
>
i had read MD5SUMS file:
http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/MD5SUMS


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Re: dvd Jessie images

[andrey . rybak]

> I don't know where you got the number '10', but it seems like there are
> 7 or 8 images, depending on architecture (I looked at i386 and amd64)
i take it from here:
http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/MD5SUMS


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Re: dvd Jessie images

[Steve McIntyre]

In article <76accde271c69bc90283dc5384e4600d.squir...@newmail.bilkent.edu.tr> 
you write:
>hi all.
>I want download full set of dvd Jessie images. But on official site
>http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/ i can find only 4
>images. Where i can find all 10 official dvd images?

http://www.debian.org/CD/faq/#not-all-images

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Re: dropbox alternative

[Dmitrii Kashin]

"Michael P. Soulier"  writes:

> On 16/10/13 Dmitrii Kashin said:
>
>> Rsync is a good alternative.
>
> Rsync doesn't merge documents edited in multiple places.

And Dropbox does?

> I use a Git repo for that.

So do I.


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Re: dropbox alternative

[Michael P. Soulier]

On 16/10/13 Dmitrii Kashin said:

> Rsync is a good alternative.

Rsync doesn't merge documents edited in multiple places. I use a Git repo for
that.

Mike


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Re: Question for you network/DNS/Apache gurus;

[Jochen Spieker]

Hi John,

please don't Cc people on the list unless they explicitly ask for it.
Thanks.

John W. Foster:
> On Wed, 2013-10-16 at 10:02 -0500, John W. Foster wrote: 
>
>> the site under construction is www.physicswiki.net
>> the numerical address is 192.65.240.181
>> the default 'sites-available file is

As someone else pointed out first: fix your DNS entries first.

>>> 
>>> ServerAdmin webmaster@localhost
>>> 
>>> ServerName www.physicswiki.net
>>> ServerAlias quark.physicswiki.net   

Looks good. Is "default" actually enabled? Run 'a2ensite default' to
make sure it is.

> I also just tried adding the actual IP address to the apache config as 
> Listen NameVirtualHost 192.65.240.181:80 in apache.conf

This looks wrong. You need

Listen 192.65.240.181:80
NameVirtualHost 192.65.240.181:80

J.
-- 
My drug of choice is self-pity.
[Agree]   [Disagree]
 


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Re: dvd Jessie images

[Dmitrii Kashin]

Catherine Gramze  writes:

> On Wed, 16 Oct 2013 16:33:39 +0300
> andrey.ry...@bilkent.edu.tr wrote:
>
>> hi all.
>> I want download full set of dvd Jessie images. But on official site
>> http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/ i can find
>> only 4 images. Where i can find all 10 official dvd images?
>> Thanks in advance
>> 
>> 
> You just need to wait a bit. Jessie is in the process of changing from
> "testing" to "stable" and the full DVD sets are only made for the
> stable release, currently Wheezy.

The question was about Wheezy release. There's only 3 DVD disks for each
architecture (and 8 CD disks; maybe TS mentioned 3+8=11?).

> For those who have been around longer than I have, can you verify that
> Jessie is now frozen,

No. It will be frozen on the 5th of November 2014. [0]

> and that they are removing packages with critical bugs prior to
> releasing Jessie as stable??

Not at all. When testing freezes, RC buggy packages will be removed from
it only if maintainers won't present fixes for them in 2 weeks. Also,
non-buggy packages depending on buggy ones will be removed too. [1]

[0] https://lists.debian.org/debian-devel-announce/2013/10/msg4.html
[1] http://release.debian.org/jessie/freeze_policy.html


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Re: Question for you network/DNS/Apache gurus;

[Jerry Stuckle]

On 10/16/2013 11:39 AM, John W. Foster wrote:

On Wed, 2013-10-16 at 10:02 -0500, John W. Foster wrote:

the site under construction is www.physicswiki.net
the numerical address is 192.65.240.181
the default 'sites-available file is



ServerAdmin webmaster@localhost

ServerName www.physicswiki.net
ServerAlias quark.physicswiki.net   
DocumentRoot /var/www

Options FollowSymLinks
AllowOverride None


Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all


ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/

AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all


ErrorLog ${APACHE_LOG_DIR}/error.log

# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn

CustomLog ${APACHE_LOG_DIR}/access.log combined






I also just tried adding the actual IP address to the apache config as
Listen NameVirtualHost 192.65.240.181:80 in apache.conf
and
VirtualHost 191.65.240.181:80 in /sites-available/defalut

did the apache restart but seemed to make on difference.




When I do an nslookup on www.physicswiki.net, I get an IP address of 
184.168.221.5.  It looks like your DNS record is incorrect.


Jerry


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Re: Question for you network/DNS/Apache gurus;

[Karl E. Jorgensen]

On Wed, Oct 16, 2013 at 10:02:49AM -0500, John W. Foster wrote:
> the site under construction is www.physicswiki.net
> the numerical address is 192.65.240.181

These two do not match up: A DNS lookup reveals this:

karl@hawking:~$ host www.physicswiki.net
www.physicswiki.net is an alias for physicswiki.net.
physicswiki.net has address 184.168.221.5

Thus: when you enter "www.physicswiki.net" in a browser, you end up at
184.168.221.5 - which I assume is a different server than
192.65.240.181.

if you *want* the traffic for www.physicswiki.net to end up at
184.168.221.5, then you need to update your DNS - this appears to be
somewhere under domaincontrol.com.


> the default 'sites-available file is
> 
> > 
> > ServerAdmin webmaster@localhost
> > 
> > ServerName www.physicswiki.net
> > ServerAlias quark.physicswiki.net   
> > DocumentRoot /var/www
> > 
> > Options FollowSymLinks
> > AllowOverride None
> > 
> > 
> > Options Indexes FollowSymLinks MultiViews
> > AllowOverride None
> > Order allow,deny
> > allow from all
> > 
> > 
> > ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
> > 
> > AllowOverride None
> > Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
> > Order allow,deny
> > Allow from all
> > 
> > 
> > ErrorLog ${APACHE_LOG_DIR}/error.log
> > 
> > # Possible values include: debug, info, notice, warn, error, crit,
> > # alert, emerg.
> > LogLevel warn
> > 
> > CustomLog ${APACHE_LOG_DIR}/access.log combined
> > 
> 
> 
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Re: Logitech unified wireless

[Dan Ritter]

On Tue, Oct 15, 2013 at 05:18:38PM +0200, Gareth de Vaux wrote:
> On Mon 2013-10-14 (07:18), Dan Ritter wrote:
> > There's a utility called solaar which can reprogram Logitech
> > mice and keyboards to use a plugged-in receiver; it's at
> > http://pwr.github.io/Solaar/index.html
> 
> Ran into this today too (with the logitech mk520 keyboard/mouse),
> seems like you need to unpair/pair the devices on each reboot?

No, once programmed the pairing ought to continue until
reprogrammed. Keyboards paired this way should be usable at BIOS
boot time, assuming your BIOS can cope with USB HID (almost
all can).

-dsr-


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/16/2013 12:27 PM, Miles Fidelman wrote:

Jerry Stuckle wrote:

On 10/16/2013 7:15 AM, Darko Gavrilovic wrote:

On Tue, Oct 15, 2013 at 9:25 PM, Jerry Stuckle
 wrote:


Which is also why Universities require about 3/4 of the course hours be
outside of your major.



Huh!!?? I think you may be referring to distribution requirements and
you might mean 1/4 of your "course hours". It's a distribution
requirement applies to under graduate studies so that you graduate as
a fully rounded intelligent member of society. :-)




I meant exactly what I said.  When I was in college, my EE major
required 180 hours (quarter system, not semesters).  Of those 180
hours, 45 of them were actual EE classes.  Some others were related
such as math and physics; even programming (Fortran) was required. But
over 1/2 the hours had absolutely nothing to do with EE.

And don't get me started on the Computer Science curriculum (which at
the time required 2 years of a foreign language).


Doesn't say much for your degree, then.




It was (and still is) considered a good university.  And that is pretty 
common for any university in the United States.  Have you checked the 
actual curriculum for MIT, Cal Tech or others?


Jerry


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Re: Jessie Minimum Kernel Requirement

[Sven Joachim]

On 2013-10-16 11:46 +0200, Florian Lindner wrote:

> I plan to use Debian on a virtual server where I can't control the
> kernel version, that is 2.6.32.
>
> What is the minimum kernel version for the upcoming Jessie?

Currently 2.6.32, the version in Squeeze (oldstable).

> Can I rely
> on that this does no change after the freeze? (IIRC at Nov 5th)

Not really, since the freeze is scheduled for November *2014*, and some
packages like udev might need a newer kernel then.  However, you usually
do not need those on a vserver.

Cheers,
   Sven


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Re: dvd Jessie images

[Steven Post]

On Wed, 2013-10-16 at 11:44 -0500, Catherine Gramze wrote:
> On Wed, 16 Oct 2013 16:33:39 +0300
> andrey.ry...@bilkent.edu.tr wrote:
> 
> > hi all.
> > I want download full set of dvd Jessie images. But on official site
> > http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/ i can find
> > only 4 images. Where i can find all 10 official dvd images?
> > Thanks in advance

I don't know where you got the number '10', but it seems like there are
7 or 8 images, depending on architecture (I looked at i386 and amd64)

I think I missed something, because I thought there were over 40 CDs for
the whole archive. Perhaps these are just the ones that got updates with
the 7.2.0 update?

> > 
> > 
> You just need to wait a bit. Jessie is in the process of changing from
> "testing" to "stable" and the full DVD sets are only made for the
> stable release, currently Wheezy.
> 
> For those who have been around longer than I have, can you verify that
> Jessie is now frozen, and that they are removing packages with critical
> bugs prior to releasing Jessie as stable??
> 
The freeze won't happen till the 5th of November, see [1] for details.
The actual release of Jessie won't be until somewhere in 2015.

Best regards,
Steven

[1] http://lists.debian.org/debian-devel-announce/2013/10/msg4.html


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Re: Problems creating preseed.cfg - syntax?

[Richard Owlett]

Curt wrote:

On 2013-10-14, Richard Owlett  wrote:




Sorry. I had been focused on solving my immediate problem
immediately - which I did.
I've time set aside this afternoon to reproduce the problem and
create bug report(s) as required. I'll preserve the error
messages as part of those report(s).

Satisfactory?




Sure, it's just that the info might be of benefit to posterity is all.



There will be a delay.
My dedicated test machine has apparently developed hardware problems.
Will have to shuffle things on an alternate machine.



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Re: dropbox alternative

[Tony van der Hoff]

On 16/10/13 12:13, yudi v wrote:
> I am looking for an dropbox alternative, so far  found Unison and btsynch
> (not open sourced).
> Are there any other open sourced alternatives.
> 
> I am not interested in server/client designs like owncloud, pud.io, and
> various others.
> 
> It should be able to propagate latest changes to other nodes/clients, be
> secure, and should be available for different platforms.
> 

Huh? Unison is certainly open source (GPL), although it's not currently
beimg actively developed. There's even a Debian package for it.
http://www.cis.upenn.edu/~bcpierce/unison/index.html

-- 
Tony van der Hoff  | mailto:t...@vanderhoff.org
Ariège, France |


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Re: dvd Jessie images

[Dmitrii Kashin]

andrey.ry...@bilkent.edu.tr writes:

> Where i can find all 10 official dvd images?

Why do you think it should be 10 dvd images?


pgp6XAHzEke2A.pgp
Description: PGP signature

Re: dvd Jessie images

[Catherine Gramze]

On Wed, 16 Oct 2013 16:33:39 +0300
andrey.ry...@bilkent.edu.tr wrote:

> hi all.
> I want download full set of dvd Jessie images. But on official site
> http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/ i can find
> only 4 images. Where i can find all 10 official dvd images?
> Thanks in advance
> 
> 
You just need to wait a bit. Jessie is in the process of changing from
"testing" to "stable" and the full DVD sets are only made for the
stable release, currently Wheezy.

For those who have been around longer than I have, can you verify that
Jessie is now frozen, and that they are removing packages with critical
bugs prior to releasing Jessie as stable??


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Re: Question for you network/DNS/Apache gurus;

[John W. Foster]

On Wed, 2013-10-16 at 10:02 -0500, John W. Foster wrote: 
> the site under construction is www.physicswiki.net
> the numerical address is 192.65.240.181
> the default 'sites-available file is
> 
> > 
> > ServerAdmin webmaster@localhost
> > 
> > ServerName www.physicswiki.net
> > ServerAlias quark.physicswiki.net   
> > DocumentRoot /var/www
> > 
> > Options FollowSymLinks
> > AllowOverride None
> > 
> > 
> > Options Indexes FollowSymLinks MultiViews
> > AllowOverride None
> > Order allow,deny
> > allow from all
> > 
> > 
> > ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
> > 
> > AllowOverride None
> > Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
> > Order allow,deny
> > Allow from all
> > 
> > 
> > ErrorLog ${APACHE_LOG_DIR}/error.log
> > 
> > # Possible values include: debug, info, notice, warn, error, crit,
> > # alert, emerg.
> > LogLevel warn
> > 
> > CustomLog ${APACHE_LOG_DIR}/access.log combined
> > 
> 
> 

I also just tried adding the actual IP address to the apache config as 
Listen NameVirtualHost 192.65.240.181:80 in apache.conf
and
VirtualHost 191.65.240.181:80 in /sites-available/defalut

did the apache restart but seemed to make on difference. 


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Re: dropbox alternative

[Dmitrii Kashin]

yudi v  writes:

> I am looking for an dropbox alternative...

Rsync is a good alternative.


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Re: Jessie Minimum Kernel Requirement

[Dmitrii Kashin]

Florian Lindner  writes:

> I plan to use Debian on a virtual server where I can't control the
> kernel version, that is 2.6.32.
>
> What is the minimum kernel version for the upcoming Jessie?

I am using Jessie with the kernel from Wheezy. Don't worry, it's safe to
upgrade.


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Miles Fidelman]

Jerry Stuckle wrote:

On 10/16/2013 7:15 AM, Darko Gavrilovic wrote:
On Tue, Oct 15, 2013 at 9:25 PM, Jerry Stuckle 
 wrote:


Which is also why Universities require about 3/4 of the course hours be
outside of your major.



Huh!!?? I think you may be referring to distribution requirements and
you might mean 1/4 of your "course hours". It's a distribution
requirement applies to under graduate studies so that you graduate as
a fully rounded intelligent member of society. :-)




I meant exactly what I said.  When I was in college, my EE major 
required 180 hours (quarter system, not semesters).  Of those 180 
hours, 45 of them were actual EE classes.  Some others were related 
such as math and physics; even programming (Fortran) was required.  
But over 1/2 the hours had absolutely nothing to do with EE.


And don't get me started on the Computer Science curriculum (which at 
the time required 2 years of a foreign language).



Doesn't say much for your degree, then.


--
In theory, there is no difference between theory and practice.
In practice, there is.    Yogi Berra


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Re: Sharing Internet to Android Devices

[ken]

On 10/15/2013 05:29 AM Muntasim-Ul-Haque wrote:

Hi,
I want to share Internet from my Debian to my Android phone. How can I
do that?


Your question is a little ambiguous, so my response might not be what 
you're after.  Check out




and let me know if I've guess right.


Thanks.


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Re: dhcpclient overwrites /etc/resolv.conf

[Michael P. Soulier]

On 16/10/13 Bonno Bloksma said:

> Just doing a chmod -w /etc/resolv.conf is not enough.
> 
> How can I accomplish this?

It's a hack, but you can use chattr to set the file to immutable.

Mike


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/16/2013 9:01 AM, berenger.mo...@neutralite.org wrote:

Le 16.10.2013 13:04, Jerry Stuckle a écrit :

Anybody who thinks that being able to write code (be it Java, C, or .NET
crap), without knowing a lot about the environment their code is going
to run in, much less general analytic and design skills, is going to
have a very short-lived career.



Anyone who can't write good cross-platform code which doesn't depend
on specific hardware and software has already limited his career.
Anyone who can write good cross-platform code has a much greater
career ahead of him. It is much harder than writing platform-specific
code.



If writing portable code is harder than platform-specific code (which is
arguable nowadays), then, could it be because you have to take about
type's min/max values? To take care to be able to use /home/foo/.bar,
/home/foo/.config/bar, c:\users\foo\I\do\not\know\what depending on the
platform and what the system provides? Those are, of course, only examples.

However, I disagree that it is harder, because checking those kind of
problems should be made in every software. For types limitations, never
taking care of them is a good way to have over/under-flow problems, and
for the file considerations, what if the user have a different
configuration than what you thought, on the same system (Of course, I
know that you can access system variables to solve those problems)?
Does not it means that you have to know basics of your targets to be
able to take care of difference between them?



You're the one who said programmers need to know a lot of details about 
the hardware being used, not me.  The more you need to know about 
different hardware, the harder it is to write code to fit all of that 
hardware.



Of course, you can simply rely on portable libs. But then, when you have
a bug which does not comes from what you did, how can you determine that
it comes from a lib you used?

I remember having a portability problem, once. A code worked perfectly
on a compiler, and not at all on another one. It was not a problem of
hardware, but of software: both had to do a choice on a standard's lack
of specification (which is something I did not known at that point. I
have never read the standard sadly.). I had to take a look at asm
generated code for both compilers to understand the error, and find a
workaround.


A good programmer knows what is defined and not defined in the language. 
 For instance, in our C and C++ classes, we teach that the results of 
something like func(i++, ++i); is not defined.



What allowed me to understand the problem, was that I had that asm
knowledge, which was not a requirement to do what I did.

Of course, I have far less experience and grades than it seem you both
have, and if I gave a minimalistic sample of the problem you could think
that it was stupid, but it does not change that I only was able to fix
the problem because of my knowledge of stuff that I have no real need to
know.


You should always be aware of the limitations of the language you are 
using, also.


Jerry


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/16/2013 8:19 AM, berenger.mo...@neutralite.org wrote:

Le 16.10.2013 03:25, Jerry Stuckle a écrit :

Ah, but you are more than a "simple user".


I guess so. I am not even a TV user anymore in fact, but that's not the
question.
The point is that I can hardly consider a programmer to be a simple user
of a computer, because when you write a program, you will probably have
to know how to install it, and so know the system you target. Because
it's the programmer who knows what the program needs. Root access maybe?
Or will it listen on a port? Which configuration files will it needs?
Which installed lib?
Those are not the work of the admin, even if the admins can be able to
understand about what the programmer is talking, so that they can then
know when there is a problem how to fix it.



The programmer may require specific privileges (in Linux they would be 
root privileges), but it is the admin who grants those privileges. 
There is no way a programmer should be allowed to define privileges on 
another system.  Hackers would have a heyday.



Just like I
don't program in assembler (for Intel or Motorola MPUs or IBM
mainframes), although I could do any of them still.


I do not do it either. But by being able to do so, I can understood why
some instructions will slow down programs more than others. Of course,
early optimization is root of evil, but I know that if I have to
divide/multiply integers by a power of 2, I can use the << and >>
operators. It also helps me when I need to debug programs, even if I do
not have the source code.


Pointers have nothing to do with assembler.


Pointers are memory addresses, which are very important in asm. So, yes,
knowing asm helped me a lot to understand C pointers. I understood them
without any problem, unlike my classmates. And those guys were, as me,
coming from electronic studies, so they were supposed to know basics
about processors.



Yes, my C/C++ students sometimes had initial problems with pointers,
but some real-world (non-programming) examples got the point across
quickly and they grew to at least accept them, if they didn't like
them. :)


I only know few people who actually likes them :)
I liked them too, at a time, but since I can now use standard smart
pointers in C++, I tend to avoid them. I had so much troubles with them,
so now I only use them for polymorphism and sometimes RTTI.
I hope that someday references will become usable in standard
containers... (I think they are not because of technical problems, but I
do not know a lot about that. C++ is easy to learn, but hard to master.)



Good design and code structure eliminates most pointer problems; proper 
testing will get the rest.  Smart pointers are nice, but in real time 
processing they are an additional overhead (and an unknown one at that 
since you don't know the underlying libraries).



C is not the only
language with pointers


Of course. They all need to use them if they offer dynamic stuff, but
they try to hide them. Is it the good solution or not? I do not know,
but if yes, I wonder why most games are written in C or C++? I think
that guys who write them knows what is memory, and how it works. I hope
for them at least.



C was never meant to be an applications language - K&R designed it
for creating OS's (specifically Unix).  But because of that design, a
good programmer can write code that is smaller and faster than with
other languages (except assembler, of course).


Yep. It is designed to be an efficient language, allowing to give people
full control on their tool, in a portable way. This is risky, because
you can shoot your feet, but taking that risk is needed to have
efficient softwares.

Plus, in an OS, there are applications. Kernels, drivers, and applications.
Take windows, and say honestly that it does not contains applications?
explorer, mspaint, calc, msconfig, notepad, etc. Those are applications,
nothing more, nothing less, and they are part of the OS. They simply
have to manage with the OS's API, as you will with any other
applications. Of course, you can use more and more layers between your
application the the OS's API, to stay in a pure windows environment,
there are (or were) for example MFC and .NET. To be more general, Qt,
wxWidgets, gtk are other tools.



mspaint, calc, notepad, etc. have nothing to do with the OS.  They are 
just applications shipped with the OS.  They run as user applications, 
with no special privileges; they use standard application interfaces to 
the OS, and are not required for any other application to run.  And the 
fact they are written in C is immaterial.



For Debian, in it's standard installation (I insist on the standard
installation, the one I never do), it will come with the gnome DE. I do
not know the tools it provides, but they are probably applications, too.
And it is part of the Debian OS.


Maybe your "standard installation" comes with Gnome DE.  But none of my 
servers do.  And even some of my local systems don't have

Re: dhcpclient overwrites /etc/resolv.conf

[Karl E. Jorgensen]

On Wed, Oct 16, 2013 at 01:52:10PM +, Bonno Bloksma wrote:
> Hi,
> 
> I thought I had it covered but it seems I was wrong.
> 
> My uplink uses DHCP to give me my ip-number etc. It also gives me the dns 
> server for the uplink but... I run my own dns servers(s) for our local domain.
> I want the /etc/resov.conf file to stay as it is and not be overwritten by 
> the dhcp client service.
> Just doing a chmod -w /etc/resolv.conf is not enough.
> 
> How can I accomplish this?

Several ways - not necessarily mutually exclusive:

(1) Get your own local domains into the global DNS ? If it is a domain
you own, you can nominate yourself in the DNS. The upstream name
servers will go back and ask your name servers and things "should just
work".

(2) In /etc/dhcp/dhclient.conf  add:

prepend name-servers 1.2.3.4;

or similar.

(3) Install the "resolvconf" package and update
/etc/resolvconf/resolv.conf.d/head - this file is the top "fragment"
of the (now generated) /etc/resolv.conf file

There may be other ways I cannot think of off the top of my head

Hope this helps

-- 
Karl E. Jorgensen


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Re: dhcpclient overwrites /etc/resolv.conf

[Jonathan Dowland]

On Wed, Oct 16, 2013 at 01:52:10PM +, Bonno Bloksma wrote:
> My uplink uses DHCP to give me my ip-number etc. It also gives me the
> dns server for the uplink but... I run my own dns servers(s) for our
> local domain.
> I want the /etc/resov.conf file to stay as it is and not be
> overwritten by the dhcp client service.

Configure dhclient.conf to hardcode the things you want, rather than
putting them in resolv.conf. 

> option domain-name-servers 8.8.8.8, 8.8.4.4

Or consider "prepend domain-name-servers…"


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/16/2013 7:15 AM, Darko Gavrilovic wrote:

On Tue, Oct 15, 2013 at 9:25 PM, Jerry Stuckle  wrote:


Which is also why Universities require about 3/4 of the course hours be
outside of your major.



Huh!!?? I think you may be referring to distribution requirements and
you might mean 1/4 of your "course hours". It's a distribution
requirement applies to under graduate studies so that you graduate as
a fully rounded intelligent member of society. :-)




I meant exactly what I said.  When I was in college, my EE major 
required 180 hours (quarter system, not semesters).  Of those 180 hours, 
45 of them were actual EE classes.  Some others were related such as 
math and physics; even programming (Fortran) was required.  But over 1/2 
the hours had absolutely nothing to do with EE.


And don't get me started on the Computer Science curriculum (which at 
the time required 2 years of a foreign language).


Jerry


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/16/2013 12:16 AM, Miles Fidelman wrote:

Jerry Stuckle wrote:


Why?  Do you know how a TV signal is encoded at the station?  How it
is modulated onto the carrier?  The operation of the RF and IF strips
in your TV?  The frequencies of the local oscillator(s) being used?
How the RF signal is demodulated?  How the video and audio are
decoded?  How the video is displayed on the screen?  How the audio
ends up at the speakers?

Or do you just turn it on and watch your favorite show?


Kinda helps to know how to wire together all the various pieces that go
with a TV these days:
- cable connection
- DVR
- CD Player
- maybe a VHS recorder
- stereo system
- Tivo box
- maybe a computer, Apple TV, or some other Internet Video source
- video game system (or more than one)
Have to understand all those different kinds of connectors and
interfaces on the back of all the boxes, and how to connect 6 different
video sources into 4 different ports.

And, it kind of helps to know at least a little bit about how to track
down why a particular channel is not showing up (say, by going into the
diagnostic menu on the cable box).

Of course you can call up the local Best Buy and pay Geek Squad to take
care of it for you.

But, at the very least, when someone leaves the PS2 feeding the TV, you
have to know which remote(s) you have to fiddle with to switch back to
the cable box.



You need to know more to install and troubleshoot problems.  But you 
don't need any of this to watch TV.



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Re: Question for you network/DNS/Apache gurus;

[John W. Foster]

the site under construction is www.physicswiki.net
the numerical address is 192.65.240.181
the default 'sites-available file is

> 
>   ServerAdmin webmaster@localhost
> 
>   ServerName www.physicswiki.net
>   ServerAlias quark.physicswiki.net   
>   DocumentRoot /var/www
>   
>   Options FollowSymLinks
>   AllowOverride None
>   
>   
>   Options Indexes FollowSymLinks MultiViews
>   AllowOverride None
>   Order allow,deny
>   allow from all
>   
> 
>   ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
>   
>   AllowOverride None
>   Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
>   Order allow,deny
>   Allow from all
>   
> 
>   ErrorLog ${APACHE_LOG_DIR}/error.log
> 
>   # Possible values include: debug, info, notice, warn, error, crit,
>   # alert, emerg.
>   LogLevel warn
> 
>   CustomLog ${APACHE_LOG_DIR}/access.log combined
> 


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Miles Fidelman]

berenger.mo...@neutralite.org wrote:

Le 16.10.2013 13:04, Jerry Stuckle a écrit :
Anybody who thinks that being able to write code (be it Java, C, or 
.NET

crap), without knowing a lot about the environment their code is going
to run in, much less general analytic and design skills, is going to
have a very short-lived career.



Anyone who can't write good cross-platform code which doesn't depend
on specific hardware and software has already limited his career.
Anyone who can write good cross-platform code has a much greater
career ahead of him. It is much harder than writing platform-specific
code.



If writing portable code is harder than platform-specific code (which 
is arguable nowadays), then, could it be because you have to take 
about type's min/max values? To take care to be able to use 
/home/foo/.bar, /home/foo/.config/bar, c:\users\foo\I\do\not\know\what 
depending on the platform and what the system provides? Those are, of 
course, only examples.


Absolutely harder, by a long shot - in some cases you can write to the 
lowest-common-denominator of all platforms, and in some cases 
cross-platform libraries can help, but in most cases "cross-platform" 
means you have to include a lot of tests and special cases.


Consider several examples:

1. Simple HTML/JavaScript apps to run in browsers - it's practically 
impossible to write stuff that will run the same in every browser - 
different browsers support different subsets of HTML5, and beyond that 
Explorer does things one way, Firefox another, Safari another, Chrome 
another - and that's before you start talking desktop vs. mobile.  Yes, 
things like PhoneGap can hide a lot of that for you, but you still end 
up needing to write a lot of tests and browser-specific accomondations 
(and then test in every browser).


2. Anything that does graphics, particularly things that are graphics 
intensive (like games).  Different GPUs behave differently (though 
OpenGL certainly hides a lot for you), and you still have to detect, if 
not accomodate, systems that don't have a GPU.


3. Just look at all the tests and compile time options that get run by 
make (or config) granted that automake generates a lot of that for you, 
but still.  Or for that matter, consider dependency checking when you to 
an apt-get install - selecting libraries based on machine 
characteristics (big-endian, little-endian for example). Writing a 
program is more than just writing the C (or Java or Erlang or whatever) 
- one then has to put together all the build-time stuff that goes with 
it - and that has to know about and accomodate differences in build- and 
run-time environments.


It can be awfully illuminating watching a verbose display of what 
follows ./configure; ./make install  - (Watching cpan 
auto-assemble/install a perl-based application is similarly illuminating).


Miles Fidelman

--
In theory, there is no difference between theory and practice.
In practice, there is.    Yogi Berra


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X crashes

[Ed Jabbour]

Running testing, and using the nouveau driver for a GeForce 7150M / nForce 630M 
GPU.  X sporadically crashes to a black screen where things scroll by too fast 
for me 
to read.  I’ve tried to examine  kern.log and Xorg.0.log, as well as google 
searches.  
Xorg.0.log shows an error:

cat /var/log/Xorg.0.log |grep EE
[51.593] (EE) Failed to load module “modesetting” (module does not exist, 0)

and three warnings:

cat /var/log/Xorg.0.log |grep WW
[51.593] (WW) Warning, couldn’t open module modesetting
[51.636] (WW) Falling back to old probe method for vesa
[51.637] (WW) Falling back to old probe method for fbdev

fbdev* and vesa are then unloaded:

cat /var/log/Xorg.0.log|grep fbdev
[51.654] (II) Module fbdevhw: vendor=”X.Org Foundation”
[52.011] (II) UnloadModule: “fbdev”
[52.011] (II) Unloading fbdev
[52.011] (II) UnloadSubModule: “fbdevhw”
[52.012] (II) Unloading fbdevhw
[51.628] (II) Module fbdev: vendor=”X.Org Foundation”
[52.011] (II) UnloadModule: “fbdev”
[52.011] (II) Unloading fbdev
[52.011] (II) UnloadSubModule: “fbdevhw”
[52.012] (II) Unloading fbdevhw

cat /var/log/Xorg.0.log|grep vesa
[51.266] (==) Matched vesa as autoconfigured driver 4
[51.564] (II) LoadModule: “vesa”
[51.565] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[51.592] (II) Module vesa: vendor=”X.Org Foundation”
[51.630] (II) VESA: driver for VESA chipsets: vesa
[51.636] (WW) Falling back to old probe method for vesa
[52.011] (II) UnloadModule: “vesa”
[52.011] (II) Unloading vesa

 KMS is enabled in the kernel:

cat /boot/config-3.10-3-686-pae|grep -i kms
CONFIG_DRM_KMS_HELPER=m
CONFIG_DRM_I915_KMS=y

Might any of this be related to the X crash?  I don’t think so, but then ...

Re: Jessie Minimum Kernel Requirement

[Osamu Aoki]

On Wed, Oct 16, 2013 at 08:21:35AM -0400, Tom H wrote:
> On Wed, Oct 16, 2013 at 8:00 AM, Darac Marjal  
> wrote:
> > On Wed, Oct 16, 2013 at 03:54:06PM +0400, recovery...@gmail.com wrote:
> >> On Wed, 16 Oct 2013 11:46:40 +0200
> >> Florian Lindner  wrote:
> >>>
> >>> What is the minimum kernel version for the upcoming Jessie? Can I rely
> >>> on that this does no change after the freeze? (IIRC at Nov 5th)
> >>
> >> Considering one should be always able to do apt-get dist-upgrade from
> >> wheezy to jessie (and that means using wheezy's kernel with jessie's
> >> userland, at least temporary), it should be safe to assume that minimum
> >> kernel requirement for jessie's userland is 2.6.32.
> >
> > This isn't really a safe assumption. There have been transitions in the
> > past (such as udev) where the dist-upgrade should be performed as:
> >   * Update sources.list
> >   * Install new kernel and new udev
> >   * Reboot
> >   * Proceed with dist-upgrade
> >
> > After the reboot, you're then running on the previous release's userland
> > with the current release's kernel. That situation SHOULD be more stable
> > than the other way around as kernels /rarely/ remove functionality. But
> > if you run new userland on an old kernel, and it tries to call
> > functionality that's not there, you can run into trouble.
> >
> >> Since wheezy's kernel version is fixed for its lifetime, it's highly
> >> unlikely that such requirement will change in the future.
> 
> Furthermore, Wheezy's kernel is 3.2 not 2.6.32.

Furthermore, current unstable only has 3.10 (Dropped 3,2).

Soon, testing/jessie will only have 3.10.


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Miles Fidelman]

Jerry Stuckle wrote:



Try again.  States do not differentiate between civil engineers, 
mechanical engineers, etc. and other engineers.  Use of the term 
"Engineer" is what is illegal.  Check with your state licensing board. 
The three states I've checked (Maryland, Texas and North Carolina) are 
all this way.


Then an awful lot of folks working at NSA, NASA, and in the Research 
Park area, with titles like "sr. software engineer" are working illegally.


Massachusetts, New York, and California do not.  And in general, (which 
I expect is true of Maryland, Texas, and North Carolina) - a license is 
required to call yourself a "professional engineer" and use the letters 
P.E. after your name.  A license is also required to work on certain 
kinds of projects - mostly in construction (an awful lot of states 
regulate PEs under their "Board of Engineering and Land Surveying").


Just as another reference point, I just worked on a proposal for an 
"intelligent transportation system" for Baltimore's transit system 
(Maryland Transportation Agency).  It originally had a requirement that 
"designs be sealed by a professional engineer licensed in MD." As soon 
as someone pointed out that this was a software system, not a 
construction project, that requirement was removed.




And yes, there have been attempts to license programmers.  But that is 
a separate issue.



Generally, it's considered misrepresentation to call yourself an
engineer without at least a 4-year degree from a uniersity with an
accredited program.



And a state license, as indicated above.


You're simply wrong.




And "Systems Programming" has never mean someone who writes operating
systems; I've known a lot of systems programmers, who's job was to
ensure the system ran.  In some cases it meant compiling the OS with
the require options; other times it meant configuring the OS to meet
their needs.  But they didn't write OS's.


It's ALWAYS meant that, back to the early days of the field.



That's very interesting.  Because when I was working for IBM (late
70's on) on mainframes, all of our customers had "Systems
Programmers".  But NONE of them wrote an OS - IBM did that. The
systems programmers were, however, responsible for installation and
fine tuning of the software on the mainframes.

There are a lot of "Systems Programmers" out there doing exactly that
job.  There are very few in comparison who actually write operating
systems.

It seems your experience is somewhat limited to PC-based systems.

Hmm, in rough cronological order:
- DG Nova
- IBM 360 (batch and TSO)
- Multics
- pretty much every major flavor of DEC System (PDP-1, PDP-10/20, PDP-8,
PDP-11, VAX, a few others)
-- including some pretty funky operating systems - ITS, Cronus, and
TENEX come to mind
- both varieties of LISP machine
- various embedded systems (wrote microcode for embedded avionic
machines at one point)
- various embeded micro-controllers (both basic TTL logic and z80-class)
- various Sun desktop and server class machines
- BBN Butterfly
- IBM RS/6000
- a lot of server-class machines (ran a hosting company for a while)
- yeah, and a lot of Macs, some PCs, a few Android devices, and a couple
of TRS-80s in there along the way



So young?  I started on an IBM 1410, several years before the 360 was 
introduced.  And I see you've played with a few minis.  But you 
obviously have limited experience in large shops.


Well, we had them around.  And I happened to manage the engineering time 
sharing services for a mid-sized defense contractor at one point.  The 
DECSYSTEM-20 I was responsible for sat right next to the 370/something 
that ran all our MIS stuff, and the guy who "owned" MIS was a peer.


Sounds to me like you, on the other hand, have only worked on IBM "big 
iron" - which is actually a pretty simplistic and structurd environment 
when it comes to programming - particularly in the early days.  (Systems 
Analysts did the thinking, programmers wrote what they were told - 
usually in Cobol or PL/1).






Can't find any "official definition" - but the WikiPedia definition is
reasonably accurate: "*System programming* (or *systems 
programming*) is

the activity of computer programming
 system software
. The primary
distinguishing characteristic of systems programming when compared to
application programming
 is that
application 
programming aims to produce software which provides services to the 
user

(e.g. word processor ),
whereas systems programming aims to produce software which provides
services to the computer hardware
 (e.g. disk 
defragmenter

). It requires a greater
degree of hardware awareness.



And Wikipedi

dhcpclient overwrites /etc/resolv.conf

[Bonno Bloksma]

Hi,

I thought I had it covered but it seems I was wrong.

My uplink uses DHCP to give me my ip-number etc. It also gives me the dns 
server for the uplink but... I run my own dns servers(s) for our local domain.
I want the /etc/resov.conf file to stay as it is and not be overwritten by the 
dhcp client service.
Just doing a chmod -w /etc/resolv.conf is not enough.

How can I accomplish this?

Bonno Bloksma


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dvd Jessie images

[andrey . rybak]

hi all.
I want download full set of dvd Jessie images. But on official site
http://cdimage.debian.org/debian-cd/7.2.0/i386/iso-dvd/ i can find only 4
images. Where i can find all 10 official dvd images?
Thanks in advance


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[berenger . morel]

Le 16.10.2013 13:04, Jerry Stuckle a écrit :
Anybody who thinks that being able to write code (be it Java, C, or 
.NET
crap), without knowing a lot about the environment their code is 
going

to run in, much less general analytic and design skills, is going to
have a very short-lived career.



Anyone who can't write good cross-platform code which doesn't depend
on specific hardware and software has already limited his career.
Anyone who can write good cross-platform code has a much greater
career ahead of him. It is much harder than writing platform-specific
code.



If writing portable code is harder than platform-specific code (which 
is arguable nowadays), then, could it be because you have to take about 
type's min/max values? To take care to be able to use /home/foo/.bar, 
/home/foo/.config/bar, c:\users\foo\I\do\not\know\what depending on the 
platform and what the system provides? Those are, of course, only 
examples.


However, I disagree that it is harder, because checking those kind of 
problems should be made in every software. For types limitations, never 
taking care of them is a good way to have over/under-flow problems, and 
for the file considerations, what if the user have a different 
configuration than what you thought, on the same system (Of course, I 
know that you can access system variables to solve those problems)?
Does not it means that you have to know basics of your targets to be 
able to take care of difference between them?


Of course, you can simply rely on portable libs. But then, when you 
have a bug which does not comes from what you did, how can you determine 
that it comes from a lib you used?


I remember having a portability problem, once. A code worked perfectly 
on a compiler, and not at all on another one. It was not a problem of 
hardware, but of software: both had to do a choice on a standard's lack 
of specification (which is something I did not known at that point. I 
have never read the standard sadly.). I had to take a look at asm 
generated code for both compilers to understand the error, and find a 
workaround.
What allowed me to understand the problem, was that I had that asm 
knowledge, which was not a requirement to do what I did.


Of course, I have far less experience and grades than it seem you both 
have, and if I gave a minimalistic sample of the problem you could think 
that it was stupid, but it does not change that I only was able to fix 
the problem because of my knowledge of stuff that I have no real need to 
know.



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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[berenger . morel]

Le 16.10.2013 08:24, Erwan David a écrit :
On Wed, Oct 16, 2013 at 01:10:42AM CEST, 
berenger.mo...@neutralite.org said:



Le 15.10.2013 19:32, Chris Bannister a écrit :
>On Mon, Oct 14, 2013 at 03:43:21PM +0200,
>berenger.mo...@neutralite.org wrote:
>>I know I wont teach that to anyone here, but modems are not
>>computing stuff, at all. They are simply here to transform numeric
>>signals to analogical ones, and vice versa. I wonder why someone
>>would explicitly call the boxes "router-modem"...
>
>Ummm, Under the router which is plugged into the phone line:
>"ADSL2+ WiFi Modem Router" (without the hyphen!)
>
>Under my other router "Wireless router" and yes, it has no modem
>capability (as the name implies!)

Do you think the radio waves are binary signal?


Just as much as the electric signal in an ethernet cable...


You got me :)


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Re: Set widescreen resolution in console

[Lisi Reisz]

On Wednesday 16 October 2013 13:14:06 Chris Bannister wrote:
> On Tue, Oct 15, 2013 at 09:23:16PM +0400, Dmitrii Kashin wrote:
> > Lisi Reisz  writes:
> > > On Monday 14 October 2013 00:29:26 Antonio Paiva wrote:
> > >> what is Debian
> > >> Jessie?
> > >
> > > The current Testing.  It has not, I believe, got a number yet,
> > > but I
>
>   ^^
>
> Although, it appears the OP is stating what she believes, in this
> context (It reads to me as) she is basically saying:
>
> "I am not entirely certain but I don't think it has a number yet,
> but If it has already then I'd expect it to be Debian 8 or will be
> Debian 8 when it has."

That is exactly what I meant.  I wasn't sure about the number, largely 
because I personally am not that worried about the number, but I was 
sure that Jessie is the current Testing, which seemed to me to answer 
the question "What is Debian Jessie?".  And no-one else had replied.

> > > would expect it to be Debian 8 eventually.
> >
> > You're wrong. It has.
>
> That's a bit harsh.
>
> > https://lists.debian.org/debian-devel-announce/2012/07/msg4.h
> >tml

I am not on the Debian developers announce list.

> Ahh, look it states Debian 8.
>
> IOW, "I believe" appears to be a phrase that a translator would
> have to be very careful with. :)

:-)

Lisi


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Re: Jessie Minimum Kernel Requirement

[Tom H]

On Wed, Oct 16, 2013 at 8:00 AM, Darac Marjal  wrote:
> On Wed, Oct 16, 2013 at 03:54:06PM +0400, recovery...@gmail.com wrote:
>> On Wed, 16 Oct 2013 11:46:40 +0200
>> Florian Lindner  wrote:
>>>
>>> What is the minimum kernel version for the upcoming Jessie? Can I rely
>>> on that this does no change after the freeze? (IIRC at Nov 5th)
>>
>> Considering one should be always able to do apt-get dist-upgrade from
>> wheezy to jessie (and that means using wheezy's kernel with jessie's
>> userland, at least temporary), it should be safe to assume that minimum
>> kernel requirement for jessie's userland is 2.6.32.
>
> This isn't really a safe assumption. There have been transitions in the
> past (such as udev) where the dist-upgrade should be performed as:
>   * Update sources.list
>   * Install new kernel and new udev
>   * Reboot
>   * Proceed with dist-upgrade
>
> After the reboot, you're then running on the previous release's userland
> with the current release's kernel. That situation SHOULD be more stable
> than the other way around as kernels /rarely/ remove functionality. But
> if you run new userland on an old kernel, and it tries to call
> functionality that's not there, you can run into trouble.
>
>> Since wheezy's kernel version is fixed for its lifetime, it's highly
>> unlikely that such requirement will change in the future.

Furthermore, Wheezy's kernel is 3.2 not 2.6.32.


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[berenger . morel]

Le 16.10.2013 03:25, Jerry Stuckle a écrit :

Ah, but you are more than a "simple user".


I guess so. I am not even a TV user anymore in fact, but that's not the 
question.
The point is that I can hardly consider a programmer to be a simple 
user of a computer, because when you write a program, you will probably 
have to know how to install it, and so know the system you target. 
Because it's the programmer who knows what the program needs. Root 
access maybe? Or will it listen on a port? Which configuration files 
will it needs? Which installed lib?
Those are not the work of the admin, even if the admins can be able to 
understand about what the programmer is talking, so that they can then 
know when there is a problem how to fix it.



Just like I
don't program in assembler (for Intel or Motorola MPUs or IBM
mainframes), although I could do any of them still.


I do not do it either. But by being able to do so, I can understood 
why
some instructions will slow down programs more than others. Of 
course,

early optimization is root of evil, but I know that if I have to
divide/multiply integers by a power of 2, I can use the << and >>
operators. It also helps me when I need to debug programs, even if I 
do

not have the source code.


Pointers have nothing to do with assembler.


Pointers are memory addresses, which are very important in asm. So, 
yes,
knowing asm helped me a lot to understand C pointers. I understood 
them
without any problem, unlike my classmates. And those guys were, as 
me,

coming from electronic studies, so they were supposed to know basics
about processors.



Yes, my C/C++ students sometimes had initial problems with pointers,
but some real-world (non-programming) examples got the point across
quickly and they grew to at least accept them, if they didn't like
them. :)


I only know few people who actually likes them :)
I liked them too, at a time, but since I can now use standard smart 
pointers in C++, I tend to avoid them. I had so much troubles with them, 
so now I only use them for polymorphism and sometimes RTTI.
I hope that someday references will become usable in standard 
containers... (I think they are not because of technical problems, but I 
do not know a lot about that. C++ is easy to learn, but hard to master.)



C is not the only
language with pointers


Of course. They all need to use them if they offer dynamic stuff, 
but
they try to hide them. Is it the good solution or not? I do not 
know,

but if yes, I wonder why most games are written in C or C++? I think
that guys who write them knows what is memory, and how it works. I 
hope

for them at least.



C was never meant to be an applications language - K&R designed it
for creating OS's (specifically Unix).  But because of that design, a
good programmer can write code that is smaller and faster than with
other languages (except assembler, of course).


Yep. It is designed to be an efficient language, allowing to give 
people full control on their tool, in a portable way. This is risky, 
because you can shoot your feet, but taking that risk is needed to have 
efficient softwares.


Plus, in an OS, there are applications. Kernels, drivers, and 
applications.
Take windows, and say honestly that it does not contains applications? 
explorer, mspaint, calc, msconfig, notepad, etc. Those are applications, 
nothing more, nothing less, and they are part of the OS. They simply 
have to manage with the OS's API, as you will with any other 
applications. Of course, you can use more and more layers between your 
application the the OS's API, to stay in a pure windows environment, 
there are (or were) for example MFC and .NET. To be more general, Qt, 
wxWidgets, gtk are other tools.


For Debian, in it's standard installation (I insist on the standard 
installation, the one I never do), it will come with the gnome DE. I do 
not know the tools it provides, but they are probably applications, too. 
And it is part of the Debian OS.
I know, OSes have evolved since the first UNIX. But languages and the 
libs available in them too. C was invented 40 years ago. I have seen 
some of the codes which were valid at that time, and it really had great 
enhancements (imo).
But all of this have nothing related to the need of understanding 
basics of what you use when doing a program. Not understanding how a 
resources you acquired works in its big lines, imply that you will not 
be able to manage it correctly by yourself. It is valid for RAM memory, 
but also for CPU, network sockets, etc.



A bigger advantage is
the code is machine-independent.


Which is why C and his little brother C++ are probably the reason of my 
switch to linux. See, if those languages were never used to write 
applications, there would not be so many portable and efficient one, and 
so I would have probably stayed to windows (and not annoying people on 
that list :p), instead of changing my tools one after one until I was 
able to change the OS itself without chang

Re: Jessie Minimum Kernel Requirement

[Darac Marjal]

On Wed, Oct 16, 2013 at 03:54:06PM +0400, recovery...@gmail.com wrote:
>  Hi.
> 
> On Wed, 16 Oct 2013 11:46:40 +0200
> Florian Lindner  wrote:
> 
> > What is the minimum kernel version for the upcoming Jessie? Can I rely 
> > on that this does no change after the freeze? (IIRC at Nov 5th)
> 
> Considering one should be always able to do apt-get dist-upgrade from
> wheezy to jessie (and that means using wheezy's kernel with jessie's
> userland, at least temporary), it should be safe to assume that minimum
> kernel requirement for jessie's userland is 2.6.32.

This isn't really a safe assumption. There have been transitions in the
past (such as udev) where the dist-upgrade should be performed as:
  * Update sources.list
  * Install new kernel and new udev
  * Reboot
  * Proceed with dist-upgrade

After the reboot, you're then running on the previous release's userland
with the current release's kernel. That situation SHOULD be more stable
than the other way around as kernels /rarely/ remove functionality. But
if you run new userland on an old kernel, and it tries to call
functionality that's not there, you can run into trouble.

> Since wheezy's kernel version is fixed for its lifetime, it's highly
> unlikely that such requirement will change in the future.
> 
> Of course, wheezy's 2.6.32 and, say, CentOS's 2.6.32 are different
> kernels, and in the second case you can expect all kinds of strange
> behaviour.
> 
> Reco
> 
> 
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Re: Jessie Minimum Kernel Requirement

[recoverym4n]

 Hi.

On Wed, 16 Oct 2013 11:46:40 +0200
Florian Lindner  wrote:

> What is the minimum kernel version for the upcoming Jessie? Can I rely 
> on that this does no change after the freeze? (IIRC at Nov 5th)

Considering one should be always able to do apt-get dist-upgrade from
wheezy to jessie (and that means using wheezy's kernel with jessie's
userland, at least temporary), it should be safe to assume that minimum
kernel requirement for jessie's userland is 2.6.32.
Since wheezy's kernel version is fixed for its lifetime, it's highly
unlikely that such requirement will change in the future.

Of course, wheezy's 2.6.32 and, say, CentOS's 2.6.32 are different
kernels, and in the second case you can expect all kinds of strange
behaviour.

Reco


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Chris Bannister]

On Tue, Oct 15, 2013 at 01:46:48PM -0400, Miles Fidelman wrote:
> Chris Bannister wrote:
> >On Mon, Oct 14, 2013 at 03:43:21PM +0200, berenger.mo...@neutralite.org 
> >wrote:
> >>I know I wont teach that to anyone here, but modems are not
> >>computing stuff, at all. They are simply here to transform numeric
> >>signals to analogical ones, and vice versa. I wonder why someone
> >>would explicitly call the boxes "router-modem"...
> >Ummm, Under the router which is plugged into the phone line:
> >"ADSL2+ WiFi Modem Router" (without the hyphen!)
> >
> >Under my other router "Wireless router" and yes, it has no modem
> >capability (as the name implies!)
> 
> Umm... the "wireless" part is a modem.  What do you think is talking
> over-the-air?

For some reason I've been assuming DSL modem regarding this discussion.
But, mea culpa, if there is any reference to DSL, then of course the
modem is built in.

I presume vici versa applies(?)

-- 
"If you're not careful, the newspapers will have you hating the people
who are being oppressed, and loving the people who are doing the 
oppressing." --- Malcolm X


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Re: pcmanfm no window/gui, one user only

[Ralf Mardorf]

On Wed, 2013-10-16 at 13:26 +0200, Tazman Deville wrote:
> I can't help but think there's a deeper, underlying issue somewhere
> that might again rear its head.

It's "normal" that GNOME and GTK stuff nowadays breaks software
regularly and it's usually not the fault of the Linux distros, it really
is caused by upstream. Perhaps it's not the case here, but regarding to
http://packages.debian.org/wheezy/pcmanfm it at least depends on much
"g" packages.

Regards,
Ralf


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Re: pcmanfm no window/gui, one user only

[Tazman Deville]

On Tue, Oct 15, 2013 at 06:00:07PM -0500, Selim T. Erdogan wrote:
> Tazman Deville, 15.10.2013:
> > 
> > You're talking about moving every .configfile in my $HOME?
> > That sounds a bit drastic, and possibly a bad idea.
> > Can we narrow it down to what possible files might actually affect
> > it without implementing such drastic measures?
> 
> I don't know much about pcmanfm, but I looked at the strace output you 
> posted, to see if there was anything that looked like it might be a 
> filename in your home directory.
> 
> Searching for "tony", I also noticed that the last line of the strace is
> ---
> connect(5, {sa_family=AF_FILE, path="/tmp/.pcmanfm-socket--0-tony"}, 30^C 
> 

Hremoving this socket file has allowed me to successfully run
pcmanfm again.
I note there are similar socket files for other users, who can run it.
I can only assume there was something wrong with this particular file.
I also note that, after removing it, and successfully running pcmanfm,
I would expect a new socket, but there is none.
Nonetheless, I have successfully started and closed pcmanfm several
times, still without seeing a new socket appear.

For all practical purposes, it seems this is resolved at the moment.
I can't help but think there's a deeper, underlying issue somewhere
that might again rear its head.
But for now, it seems I can use pcmanfm again.

Thanks!
tony
-- 
http://tazmandevil.info
taz hungry


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Darko Gavrilovic]

On Tue, Oct 15, 2013 at 9:25 PM, Jerry Stuckle  wrote:
>
> Which is also why Universities require about 3/4 of the course hours be
> outside of your major.
>

Huh!!?? I think you may be referring to distribution requirements and
you might mean 1/4 of your "course hours". It's a distribution
requirement applies to under graduate studies so that you graduate as
a fully rounded intelligent member of society. :-)


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jerry Stuckle]

On 10/15/2013 11:37 PM, Miles Fidelman wrote:

Jerry Stuckle wrote:

On 10/15/2013 6:50 PM, Miles Fidelman wrote:

Jerry Stuckle wrote:

On 10/15/2013 2:26 PM, Miles Fidelman wrote:






Geeze Jerry, you're just so wrong, on so many things.


What's a "coder"?  In over 40 years of programming, I've met many
programmers, but no "coders".  Some were better than others - but none
had "limited and low-level skill set".  Otherwise they wouldn't have
been employed as programmers.


If you've never heard the term, you sure have a narrow set of
experiences over those 40 years.  And I've seena LOT of people with very
rudimentary skills hired as programmers.  Not good ones, mind you. Never
quite sure what they've been hired to do (maybe .NET coding for business
applications?).  All the serious professionals I've come across have
titles like "software engineer" and "computer engineer."



I didn't say I haven't heard of the term.  I said I've never met any.
I have, however, seen a lot of half-assed programmers call others they
consider their inferiors "coders".

And most of the serious professionals I've come across have the title
"programmer".  In many U.S. states, you can't use the term "engineer"
legally unless you are registered as one with the state.

For someone to claim they are an "Engineer" without the appropriate
qualifications (i.e. 4-year degree and passing the required test(s) in
their jurisdiction is not only a lie, it is illegal in many places.


Ummm no.  In the US, it's illegal to call yourself a "professional
engineer" without a state license - required of civil engineers, some
mechanical engineers, some electrical engineers (typically in power
plant engineering), and other safety critical fields.  There have been
periodic attempts to require professional licensing of software
engineers - but those have routinely failed (arguably it's would be a
good idea for folks who write safety-critical software, like aircraft
control systems, SCADA software, and such).



Try again.  States do not differentiate between civil engineers, 
mechanical engineers, etc. and other engineers.  Use of the term 
"Engineer" is what is illegal.  Check with your state licensing board. 
The three states I've checked (Maryland, Texas and North Carolina) are 
all this way.


And yes, there have been attempts to license programmers.  But that is a 
separate issue.



Generally, it's considered misrepresentation to call yourself an
engineer without at least a 4-year degree from a uniersity with an
accredited program.



And a state license, as indicated above.



And "Systems Programming" has never mean someone who writes operating
systems; I've known a lot of systems programmers, who's job was to
ensure the system ran.  In some cases it meant compiling the OS with
the require options; other times it meant configuring the OS to meet
their needs.  But they didn't write OS's.


It's ALWAYS meant that, back to the early days of the field.



That's very interesting.  Because when I was working for IBM (late
70's on) on mainframes, all of our customers had "Systems
Programmers".  But NONE of them wrote an OS - IBM did that.  The
systems programmers were, however, responsible for installation and
fine tuning of the software on the mainframes.

There are a lot of "Systems Programmers" out there doing exactly that
job.  There are very few in comparison who actually write operating
systems.

It seems your experience is somewhat limited to PC-based systems.

Hmm, in rough cronological order:
- DG Nova
- IBM 360 (batch and TSO)
- Multics
- pretty much every major flavor of DEC System (PDP-1, PDP-10/20, PDP-8,
PDP-11, VAX, a few others)
-- including some pretty funky operating systems - ITS, Cronus, and
TENEX come to mind
- both varieties of LISP machine
- various embedded systems (wrote microcode for embedded avionic
machines at one point)
- various embeded micro-controllers (both basic TTL logic and z80-class)
- various Sun desktop and server class machines
- BBN Butterfly
- IBM RS/6000
- a lot of server-class machines (ran a hosting company for a while)
- yeah, and a lot of Macs, some PCs, a few Android devices, and a couple
of TRS-80s in there along the way



So young?  I started on an IBM 1410, several years before the 360 was 
introduced.  And I see you've played with a few minis.  But you 
obviously have limited experience in large shops.






Can't find any "official definition" - but the WikiPedia definition is
reasonably accurate: "*System programming* (or *systems programming*) is
the activity of computer programming
 system software
. The primary
distinguishing characteristic of systems programming when compared to
application programming
 is that
application 
programming aims to produce software which provides service

Re: Jessie Minimum Kernel Requirement

[Brad Rogers]

On Wed, 16 Oct 2013 11:46:40 +0200
Florian Lindner  wrote:

Hello Florian,

>on that this does no change after the freeze? (IIRC at Nov 5th)

Freeze is still over a year away, so probably a wee bit early to say
what kernel version will be used.

-- 
 Regards  _
 / )   "The blindingly obvious is
/ _)radnever immediately apparent"
You're only 29 got a lot to learn
Seventeen - Sex Pistols


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Re: sysadmin qualifications (Re: apt-get vs. aptitude)

[Jeff Bauer]

On 10/16/2013 12:16 AM, Miles Fidelman wrote:

Jerry Stuckle wrote:


Or do you just turn it on and watch your favorite show?


Kinda helps to know how to wire together all the various pieces that 
go with a TV these days- cable connection



snip


Of course you can call up the local Best Buy and pay Geek Squad to 
take care of it for you.


I sold my television, VCR, and video tapes in January, 1998. No regrets. 
I remain blissfully ignorant of that "entertainment" medium in 2013.


Jeff


--
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diversion: http://alienjeff.net - visit The Fringe
quote: "The foundation of authority is based upon the consent of the people." - 
Thomas Hooker


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Re: dropbox alternative

[Florian Lindner]

Am 2013-10-16 12:13, schrieb yudi v:

I am looking for an dropbox alternative, so far  found Unison and
btsynch (not open sourced).
Are there any other open sourced alternatives.

I am not interested in server/client designs like owncloud, pud.io
[1], and various others.

It should be able to propagate latest changes to other nodes/clients,
be secure, and should be available for different platforms.


Take a look at git-annex http://git-annex.branchable.com/ It takes some 
time to grasp the concept but it's very powerful and can be used to 
mimic system like dropbox while still having fine grained control about 
what is actually shared.


Kind Regards,
Florian


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dropbox alternative

[yudi v]

I am looking for an dropbox alternative, so far  found Unison and btsynch
(not open sourced).
Are there any other open sourced alternatives.

I am not interested in server/client designs like owncloud, pud.io, and
various others.

It should be able to propagate latest changes to other nodes/clients, be
secure, and should be available for different platforms.

-- 
Kind regards,
Yudi

Re: Re: wpa_supplicant: /sbin/wpa_supplicant daemon failed to start

[Gerard ROBIN]

it recorded errors:

Oct 15 11:24:51 mybox avahi-daemon[3473]: Withdrawing address record for 
2a01:e35:2e81:500:219:7dff:fe02:46aa on wlan0.
Oct 15 11:24:51 mybox charon: 16[KNL] 2a01:e35:2e81:500:219:7dff:fe02:46aa 
disappeared from wlan0
Oct 15 11:24:51 mybox charon: 16[KNL] fe80::219:7dff:fe02:46aa disappeared from 
wlan0
Oct 15 11:24:51 mybox dhclient: receive_packet failed on wlan0: Network is down
Oct 15 11:24:51 mybox wpa_supplicant[12248]: ctrl_iface exists and seems to be 
in use - cannot override it
Oct 15 11:24:51 mybox wpa_supplicant[12248]: Delete 
'/var/run/wpa_supplicant/wlan0' manually if it is not used anymore
Oct 15 11:24:51 mybox wpa_supplicant[12248]: Failed to initialize control 
interface '/var/run/wpa_supplicant'.#012You may have another
+wpa_supplicant process already running or the file was#012left by an unclean 
termination of wpa_supplicant in which case you will
+need#012to manually remove this file before starting wpa_supplicant again.
Oct 15 11:24:51 mybox dhclient: receive_packet failed on wlan0: Network is down

but after reboot my box the problem is gone ? Now this works fine ...

Sorry for the inconvenience.

Thanks for your help.
-- 
Gérard


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Jessie Minimum Kernel Requirement

[Florian Lindner]

Hello!

I plan to use Debian on a virtual server where I can't control the 
kernel version, that is 2.6.32.


What is the minimum kernel version for the upcoming Jessie? Can I rely 
on that this does no change after the freeze? (IIRC at Nov 5th)


Thanks,
Florian


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Re: Recursion is needed (Wheezy)

[Karl E. Jorgensen]

Hi

[please don't top-post - I've re-arranged the email accordingly]

> On 10/13/13, Bob Proulx  wrote:
> > Yudi wrote:
> >> I just used Wheezy's BIND9.
> >> There is a problem where checking nslookup, example nslookup
> >> www.google.com
> >>
> >> But Recursion is needed.
> >
> > Please show us what error you are having.  Otherwise no one can help
> > you.  Please cut and past the error verbatim.
> >
> > Bob
> >
> 
On Wed, Oct 16, 2013 at 10:18:30AM +0700, yudi santosa wrote:
> Here the error :
> 
> root@ns01:~#nslookup www.google.com
> ;; Got recursion not available from 192.168.1.1, trying next server
> ;; Got SERVFAIL reply from 127.0.0.1, trying next server
> Server:   127.0.0.1
> Address:  127.0.0.1#53
> 
> ** server cant't find www.google.com: NXDOMAIN

If my understanding of DNS resolution is correct then you have two
servers listed in /etc/resolv.conf: 192.168.1.1 and 127.0.0.1. Which
is unusual, but not necessarily wrong.  If you got the DNS server
details via DHCP then something is definitely wrong: DHCP servers
would not tell clients to ask themselves for DNS queries (!)

nslookup tried the first server at 192.168.1.1 (your local LAN/WIFI I
assume). But this server is not configured to accept recursive
queries, i.e. it will only accept queries for domains it its zone
files.  Assuming that 192.168.1.1 is your local LAN's DNS server, then
this DNS server is misconfigured.

The nslookup tried the 2nd server (127.0.0.1) which didn't have a clue
about the google.com domain.

So you may have two separate problems on your hands here. I'd
recommend that you first look at *why* 192.168.1.1 will not respond to
recursive queries - the default configuration for bind would (at least
on Debian), so something has been misconfigured there since install.

If you are using DHCP on this network and got the DNS details via
DHCP, then the DHCP server is likely misconfigured too: telling
clients to use 127.0.0.1 for DNS lookups is a not-so-subtle way of
telling clients to "f off" !?


-- 
Karl E. Jorgensen


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Re: Question for you network/DNS/Apache gurus;

[Jochen Spieker]

John W. Foster:
>
> I simply use the "/sites-enabled/default" in apache2 to send web queries
> to the VPS site.

You probably need to set up "name based virtual hosting". I guess all
you need to do is add an appropriate ServerName or ServerAlias to the
default site.

> Here is the issue.
> When I try to access the mediawiki for configuration, using 
> http://my.mediawiki.net (example)  the site will not work as it should.
> It opens the startup page but will do nothing else.
> When I access the site with http:// 123.123.123.123 (example numerical
> IP address) the VPS site allows the mediawiki to run the configuration &
> setup as it should.

Your obfuscation does not help us to help you. As far as I understand,
your site is already publicly available. Why hide the necesary
information to take a look ourselves?

> This is my first attempt to manage a remote site so I really need
> advice.

Start by reading Apache documentation.

J.
-- 
I often blame my shortcomings on my upbringing.
[Agree]   [Disagree]
 


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