Re: [CentOS] Backup PC or other solution
On Fri, May 08, 2015 at 01:59:12PM +0200, Timothy Murphy wrote: > Sorin Srbu wrote: > > >> >> The worst thing about BackupPC is the insane error message > >> >> "Unable to read 4 bytes", which comes up if anything is wrong. > >> >> Possibly the worst error message anywhere? > >> > > >> > thats an rsync protocol message, and yeah, debugging > >> > connection/authentication issues is a bit ugly. > >> > >> I'm sure you are right. > >> But I use rsync several times a day, and I have never received this > >> message. > >> > >> It's not ugly, it is inexcusable. It may not be rsync fault. I vaguely recall that BackupPC uses an ancient (~2006) Perl rsync library, which, for instance, does not support compressed transfers. Maybe that terse message is all that BackupPC gets from the library. :-) Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] favorite cheap VPS services
On 01/15/2015 06:24 PM, Tim Dunphy wrote: > > So I was wondering.. what are some really cheap VPS services > that you like to use for one off projects like this and why. > I'm looking for dirt cheap as possible. You can check the offers that show up on LowEndTalk: http://www.lowendtalk.com/categories/offers Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos laptop support
1. use Fedora Live instead of CentOS for boot test, then install CentOS and replace the kernel with ELRepo kernel-ml. This is usually newer even than Fedora's, thus presumably with much better support for new HW than stock CentOS. Of course, the risk here is that CentOS would not install/boot to the point to have a working yum and (wired) network. This can be usually tweaked, but hackish. 2. search the net how well is supported (any) Linux distro by the models of interest, to not waste time trying them all at the shop. With ELRepo kernels one can usually replicate the same or better support for CentOS -- if it can be tricked into installing and booting a minimal installation with yum and network. Using Fedora for many years, I have noted that a new HW gets fully supported gradually over 6-12 months. For instance, the last laptop I bought was an Asus UX31E for which even the motherboard was not well supported at the begin. After a year or so all fit into place. :-) I also keep a copy of the full disk with the original OS untouched to not loose the warranty. Before installing I boot into any Linux Live I have at hand and issue something like: dd if=/dev/sda | xz -9c directing the output to a network storage. Hope this helps. Mihai On Wed, Oct 01, 2014 at 10:57:30PM -0600, Frank Cox wrote: > Today I found myself in need of a laptop to run Centos on. And > that simple statement led to an all-day odyssey. > > My original plan was to purchase a laptop and install Centos 6 on > it. I went to Staples and tried booting it on every model of > laptop that they had in the store. They all come with Windows > 8 installed, and for the edification of anyone who doesn't know > this (I didn't until today) you have to conduct a real song and > dance to get to the bios settings on one of those things: > > boot windows > move mouse pointer to the top right corner of the screen > move down to setting menu (gear) that shows up > click on power off icon > Hold shift key and left-click on "restart" > it goes to the troubleshooting screen > click on advanced troubleshooting > click on "change uefi settings" > now we get to the bios > set secure boot off > set legacy boot priority > > And then you can boot from a USB flash drive. *whew* (It's easy > to put it back afterward, just go into the bios and tell it set to > defaults, save and exit.) > > Anyway, I tried booting a Centos 6 Live CD image on a usb flash > drive on every single model of laptop they had in stock and no joy > on any of them -- they either hung altogether, started booting and > hung at some point along the way, started a continuous cycle of > start booting, reset, start booting again, or kernel panicked. > Every last one. > > I then tried a Centos 7 Live CD image on another usb flash drive > and then the third machine that I tried it on (Lenovo Ideapad S400 > Touch) worked. So I bought that one and have now wiped Windows off > of its hard drive and installed Centos 7 so it now looks and acts > like a real computer. > > I never would have thought that it would take all bloody day to > purchase one laptop. (And I'm going to be having nightmares about > that Windows Boot Manager thing.) > > Since it has now become amazingly difficult to get a laptop if > you're not planning to use Windows, at least around here, I'm > wondering what the rest of you fine folks do when it comes to > purchasing a laptop? Next time this comes up, I'd rather not have > to spend all day on something that used to take fifteen minutes. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] USB-3.0 on C6.5 ??
On Fri, May 23, 2014 at 09:52:11PM -0400, Fred Smith wrote: > On Fri, May 23, 2014 at 09:19:49AM -0500, Johnny Hughes wrote: > > On 05/22/2014 09:09 PM, Fred Smith wrote: > > > Just wondering if there are any known issues with USB 3.0 storage devices > > > in Centos 6.5?? > > > > > > I just got one of these: > > > http://www.newegg.com/Product/Product.aspx?Item=N82E16817332028 > > > > > > it does either esata or USB 3.0. My new motherboard (ASUS M5A99X EVO > > > R2.0) supports both, so I've tried both (of course, can't have a feature > > > without at least giving it a whirl! :)). esata seems to work fine, > > > I can copy gigs 'n gigs of data to it using the esata connection. > > > > > > however, with USB3 it works for a bit then something goes wonky... > > > After copying some hundreds of megabytes (and I don't know if it is a > > > consistent number or not) suddenly my C6 box starts reporting write > > > errors. > > > > > > some investigation shows that /dev/sdc (and /dev/sdc1) no longer exist > > > on the system. it takes a reboot to get it back. After which it'll > > > work for a while then the same thing all over again. I've tried a > > > different USB 3.0 cable but it makes no difference. > > > > > > Anyone got ideas on this? You may try using a newer kernel from ElRepo (currently 3.14.4): http://elrepo.org/tiki/kernel-ml If it were a driver problem, maybe it was fixed. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] which kernel do people use?
On Wed, Oct 23, 2013 at 03:55:45PM +0200, Jitse Klomp wrote: On 10/23/2013 04:44 AM, Keith Keller wrote: > Hi all, > > I'm doing a very informal and unscientific poll: which kernel > do you use on your CentOS machines? Not which version of > the CentOS kernel, but which repository. Stock on servers and elrepo on laptops (mostly for HW support). Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LVM RAID0 and SSD discards/TRIM
On Tue, Aug 20, 2013 at 12:20:01PM +0200, Dennis Jacobfeuerborn wrote: > On 19.08.2013 20:28, Joakim Ziegler wrote: > > I'm trying to work out the kinks of a proprietary, old, and clunky > > application that runs on CentOS. One of its main problems is that it > > writes image sequences extremely non-linearly and in several passes, > > using many CPUs, so the sequences get very fragmented. > > > > The obvious solution to this seems to be to use SSDs for its output, and > > some scripts that will pick up and copy our the sequences in proper > > order once it's done. I have two 512GB SSDs, and I've used LVM to set up > > a RAID0 between them. > > > > I've got that part running, but since I'm on CentOS 5.8 (which is what > > this application officially supports), I don't have a kernel with SSD > > discard support, and after a few days (I told you, this application is > > write intensive), things get very slow. > > > > Using hdparm to secure erase the drives and recreating the LVM RAID0 > > gets things back to speed again, but that's obviously not ideal. > > > > So, from what I understand, if I can get this thing running on CentOS > > 6.4, I'll get kernel discard support, and discard support in LVM when > > running a RAID0. I'm using ext4. > > > > Is that correct? Will this solve my problem? I want to confirm that > > discard support works on a RAID0 of SSDs using LVM and ext4 before I > > start working on getting this legacy application to run on a newer CentOS. > > What kind of SSD are you using? We use Intel 520's here > and don't really see these kind of slowdowns. You can also check a newer kernel for CentOS 5 from ELrepo: http://elrepo.org/ Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Red Hat CEO: Go Ahead, Copy Our Software
On Fri, Aug 16, 2013 at 10:25:40PM -0500, Johnny Hughes wrote: > On 08/16/2013 08:07 PM, Jorge Fábregas wrote: > > On 08/16/2013 10:53 AM, Johnny Hughes wrote: > >> SUSE does not release their enterprise sources and there > >> is no SLES clone because of it. > > I can't believe I never thought about it (to wonder why there wasn't any > > SLES clone)... > > > > Shouldn't they release the source for the GPL packages? I thought there > > was no way around it (and therefore that's why Red Hat had to do it). > > 1. They only have to release Sources to the people who > they have given (sold) their software. They do not have to > release them to the general public. > > 2. Red Hat goes above and beyond this requirement, not > because they have to but because they want to. Around the middle of section 4.1.2 here: https://www.softwarefreedom.org/resources/2008/compliance-guide.html is explained that sources should be made available to anyone who has the binary code, not only direct customers: «[...] v2 § 3(b) requires that offers be "to give any third party" a copy of the Corresponding Source. GPLv3 has a similar requirement, stating that an offer must be valid for "anyone who possesses the object code". These requirements indicated in v2 § 3(c) and v3 § 6(c) are so that non-commercial redistributors may pass these offers along with their distributions. Therefore, the offers must be valid not only to your customers, but also to anyone who received a copy of the binaries from them. Many distributors overlook this requirement and assume that they are only required to fulfill a request from their direct customers.» Thus, the company can only find ways to restrict the (re)distribution of binaries in the first place to avoid that sources spread out. :-) Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Back-up connection
On Fri, Aug 16, 2013 at 01:33:01PM +0200, Timothy Murphy wrote:
> Some weeks ago, I asked if anyone had set up a backup scheme for a remote
> server.
> By backup here, I mean an alternative arrangement that can be called upon
> if eg the DSL connection to the remote machine fails.
>
> I received one interesting reply:
> ==
> At home, besides my fixed lines,
> I have two gsm-modems, one low-speed (that came free of charge with one of
> my fixed lines),
> the other is high speed, but pre-paid, normally off)
> ==
> I meant to respond at the time, asking for further details,
> but forgot, and now I have lost the original message.
I think that the original thread was on us...@lists.fedoraproject.org:
http://www.spinics.net/linux/fedora/fedora-users/msg435811.html
In case the web/CLI interface of DSL modem/router is still
responsive, you can script a reboot from the server on the
LAN when fails the ping to a set of well-know always-up hosts.
I resuscitate this way a D-Link DSL-320B with (snippet):
# Set both international and national hosts.
hosts="www.google.com www.yahoo.com www.libero.it www.telecom.it"
for h in $hosts; do
ping -c 2 "$h" > /dev/null 2>&1 && {# Success
retval=0
break
}
echo "Ping failed for ${h}."
retval=1# Failure
done
test "$retval" -ne 0 && {
echo -e "\nResetting the ADSL modem."
phantomjs adsl-reboot.js
}
adsl-reboot.js is a Javascript script that logins onto the
modem and "clicks" the reset button.
You can also play with the -w option if your ping supports it.
The default timeout is 10 seconds or so.
Mihai
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Re: [CentOS] convert webpage to image
On Wed, Aug 14, 2013 at 03:38:33PM +0100, Marko Vojinovic wrote: > But what if the size of the website is larger than the screen > size? I assume the OP wants to "see" the whole website in a > single picture, and the website might span more than a single > visible screen (and require scrolling to see the whole thing). > > All screenshot-related methods would then need to take > multiple pictures, scroll the website in the browser a > "windowfull" at a time in all directions, and afterwards > calculate how to concatenate all those pictures into a > big one. While this can be done in principle, I think that > any implementation would get Real Ugly Real Soon(tm). > > A more reasonable approach would be to have the browser > itself dump the image of the site --- the browser is the one > actually rendering the thing from html in the first place. > Any browser plugins around for this? Among those interactive, the Screengrab Firefox extension does it. Among those non-interactive, phantomjs should do it. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Skype For CentOS 6.4
On Sun, Jun 16, 2013 at 05:00:16PM -0400, Mark LaPierre wrote: > On 06/16/2013 03:46 PM, Frank Cox wrote: > > On Sun, 16 Jun 2013 15:35:58 -0400 > > Mark LaPierre wrote: > > > >> Hey all. Does anyone know if there is a newer version of Skype than > >> skype-2.1.0.81 available for CentOS 32 bit? Recent updates to Skype on > >> other platforms has been causing video connection issues in the last few > >> weeks. > > > > http://download.skype.com/linux/skype_static-4.0.0.8.tar.bz2 > > [mlapier@mushroom skype_staticQT-4.0.0.8]$ ./skype > ./skype: error while loading shared libraries: libtiff.so.4: cannot open > shared object file: No such file or directory > [mlapier@mushroom skype_staticQT-4.0.0.8]$ > > yum --enablerepo=* --disablerepo=c6-media whatprovides */libtiff.so.4 > No Matches found > > That's not a viable solution. When I downloaded the bzip I found that I > had already tried that before. I figured that was a bad sign. I installed Skype 4.0 RPM from the Nux! repo usng YUM: http://www.nux.ro/archive/2012/06/Skype_4_0_on_EL6__CentOS_Stella__ScientifixLinux__RHEL__PUIAS__update.html Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Allow updates but not upgrades
Can this plugin help? https://docs.fedoraproject.org/en-US/Fedora/14/html/Software_Management_Guide/ch06s25.html Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos6 - Xfce - howto add usb automount
On Fri, Nov 18, 2011 at 06:59:41AM +0100, Johan Vermeulen wrote: > *thunar-volman is installed by default, so does not seem to automount > usb in CentOs6 I think it's activated by thunar, thus thunar should be started. > The good thing is, when installing Nautilus, the usb now also automounts > in Thunar. That's expected, Nautilus should be started automatically by Gnome if found. > * Thunar --daemon : howto do that ? 1. It should be done automatically if you log into an XFCE session; 2. If you use a Gnome session you should arrange that the session starts Thunar instead of Nautilus. A. Test the stuff. From a shell prompt: ** stop Nautilus to check that Thunar is doing the mounting, not Nautilus: nautilus --quit ** start Thunar in the background: Thunar --daemon ** try if the USB drive is mounted automatically. B. Make settings permanent: ** save the session after stopping Nautilus and Starting Thunar as above. Hope this helps. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Changes at Red Hat confouding CentOS
On Wed, Nov 16, 2011 at 05:39:28AM -0800, Drew wrote: > > Agreed! The cramped screen space (I run dual vid cards in sli with 4 > > monitors with development apps spread all over them!), sluggish response > > (open what I have running on my work station and any laptop goes into > > crawl mode), heat (if you really run it in your lap as the name infers) > > and that just touches on the very start of my list. Yes, I have few > > laptops and use them when I 'need' to and one often times goes with me > > when I leave my office (but my phone is rapidly replacing that need > > unless I'm going for days)... but why on earth would I consider using > > only a laptop? Well, if I was always mobile, but I'm not. Maybe if I > > didn't need to run any development systems... Eclipse on a laptop > > certainly works, but is sluggish vs. a workstation. Open Dreamweaver, > > Photoshop, Eclipse, three web browsers a secure shell or few, email, IM, > > and then need to open a Word attachment and most laptops chug to worst > > than a crawl. > > And the funny thing, from my perspective at least, is that I'm sitting > beside a laptop that routinely has several VMware VM's running (XP & > Server 2008r2), several line of business applications open, and has > dreamweaver *and* gimp running in the background. :) All this on a two > year old i3 w/ 6GB RAM. Set me back around $900. > > Larger screen? VGA or HDMI outputs. ;-) Nothing quite beats working on > a 55" HDTV in your living room, especially when I have time for STO. Very similar experience here, too. I think all boils down to energy and if the marginal increase in productivity on desktop HW is worth it. Desktop components are optimized for performance with a lot less regards for power than those for mobile devices. Besides, the OS attempts and can be further tuned to use better the HW energy wise when installed on a mobile device -- and here we get just a bit closer to the topic of this list. :-) Try to gauge how much of the time (wall clock time) you use the CPU cores close to their full power during a typical day. There are several tools that may help. That will give the percentage of your working time when the higher performance of the desktop HW *may* get you a boost in productivity. Also, power the system though an energy meter and read it after 24h. I bet that unless your usage is kind of specific, such as simulations, video rendering, or batches of algorithm-heavy image processing, the time you really use such HW close to full capacity is really small. However, the power drain, even when idle, is a lot higher compared to even a high end laptop's. Besides, it's common practice to suspend the laptop session during night time. How many consider doing that with a desktop? To me it's much like hopping my 75kg in a 2 tonnes car to get some groceries. Moving around 2t for 75kg may be like 20 times more energy intensive than using a scooter. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos6 - Xfce - howto add usb automount
On Tue, Nov 15, 2011 at 04:29:08PM +0100, Johan Vermeulen wrote: > Op 15-11-11 16:11, Johan Vermeulen schreef: > > dear all, > > > > I configured Xfce on an Centos6 minimal install, I think its very fast, > > even on al 512Mb machine. > > > > But I don't have any clue how to make a usb automount on this. > > > > Anybody can help me with this? > > > > greetings, James > > answering my own question here ---> by installing Nautilus. That easy ! Nautilus is heavy, defeats somehow the whole purpose of using XFCE. :-) I'd suggest: Thunar --daemon to handle media automounting. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] glibc-2.5-58.el5_6.2.i686 broken?
On Tue, Apr 19, 2011 at 05:26:17AM -0500, Ron Blizzard wrote: > On Mon, Apr 18, 2011 at 10:48 PM, Robert Heller wrote: > > > Are only the nVidia chipsets + *proprietary* nVidia drivers? And only > > Evolution and Gnome-Panel? And is it 32-bit AND 64-bit or only 32-bit > > (or only 64-bit)? > > I can't say -- this is just my personal experience. The two machines > that are affected are 32-bit with nVidia video cards and proprietary > drivers. The two that are not affected are using Intel video chips. I > think it only affects Gnome-Panel and Evolution -- so it's a pretty > selective bug to start with. The machine I have seen the bug also has an old nVidia card. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Heads up: Bugged update xorg-x11-server-utils-7.1-5.el5_6.1 upcoming
On Mon, Apr 18, 2011 at 04:45:46PM +0200, Leonard den Ottolander wrote: > On Mon, 2011-04-18 at 15:56 +0200, Mihai T. Lazarescu wrote: > > I confirm that the update crashes gnome-panel. The panel bars > > are displayed void of contents upon login. > > The gnome panel crashes are caused by the glibc update which is the main > subject of that thread. This xorg-x11-server-utils is a different and > perhaps not quite as severe issue as the one with glibc. This update > breaks xrdb, the binary it is supposed to fix. No other binaries are > affected, so it's the choice between a functional binary with a > moderately severe vulnerability or a non functional binary. Leonard, You're perfectly right, sorry for messing things up. I indeed updated glibc and nscd from the SL fix to restore panel functionality. Regards, Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Heads up: Bugged update xorg-x11-server-utils-7.1-5.el5_6.1 upcoming
On Mon, Apr 18, 2011 at 07:40:53AM -0400, Jim Perrin wrote: > On Sun, Apr 17, 2011 at 10:56 AM, Leonard den Ottolander > wrote: > > Hi, > > > > Reading > > http://www.centos.org/modules/newbb/viewtopic.php?topic_id=30939&forum=37 I > > noticed a warning about an upcoming bugged update > > xorg-x11-server-utils-7.1-5.el5_6.1 > > Have you tested these updates to see if you have experienced any > issue? Documenting symptoms people should watch for so that they can > make their own decisions is far better than simply recommending that > you exclude the update entirely. I confirm that the update crashes gnome-panel. The panel bars are displayed void of contents upon login. Updating the packet and dependencies using the SL fix, as suggested in the link, fixes the issue although it removes a security patch. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Unicode in C++
On Wed, Feb 23, 2011 at 02:46:24PM +, Michael D. Berger wrote: > On Tue, 22 Feb 2011 23:53:20 +0100, Nicolas Thierry-Mieg wrote: > > > Michael D. Berger wrote: > >> On my CentOS box, in C++ programs, is there a way to print Unicode > >> characters? > > > > google knows... > > I haven't found it. Strange. "Using Unicode in C/C++": http://evanjones.ca/unicode-in-c.html pops on top of a plain search for "unicode c++" in Google: http://www.google.it/search?q=unicode+c%2B%2B Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Text Proccessing script - advice?
On Tue, Dec 21, 2010 at 09:40:42PM +0200, Roland RoLaNd wrote: > original data: > > 01,01368,2010-12-02,09:07:00,Pass > 01,01368,2010-12-02,10:54:00,Pass > 01,01368,2010-12-02,13:07:04,Pass > 01,01368,2010-12-02,18:54:01,Pass > 01,01368,2010-12-03,09:02:00,Pass > 01,01368,2010-12-03,13:53:00,Pass > 01,01368,2010-12-03,16:07:00,Pass > the only thing missing is to find a way to just take the > earliest time of each day. You may use mktime(datespec) (see man awk) to covert date and time into comparable integers. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] bash increment in a given way
On 12/11/2010 03:41 PM, Stephen Harris wrote: > On Sat, Dec 11, 2010 at 06:34:25AM -0800, S Mathias wrote: > You might just have to hard-code the sequence: > >for i in 0 1 4 5 8 9; do This outputs: for i in $(seq 0 4 16); do seq $i 1 $i+1; done 0 1 4 5 8 9 12 13 16 17 Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?
On Tue, Dec 07, 2010 at 09:15:50PM -0600, Les Mikesell wrote: > On 12/7/10 9:02 PM, Ryan Wagoner wrote: > > > >> Well in fact I don't think that will even work with the present URL > >> rules. Just on a lark I clicked on your string, and my firefox > >> interpreted it as http://3ffe:1900. Unless there's a special http > >> protocol string for ipv6? > >> > >> Tony > > > > Since : is used to denote the port you must put the IPv6 address in > > brackets. > > > > http://[3ffe:1900:4545:3:200:f8ff:fe21:67cf]/ > > Thunderbird doesn't make that a clickable link. Since the change to ipv6 is > pretty much inevitable and probably most things will eventually work out, > maybe > we should focus on the little things (like programs not recognizing the > addresses in various contexts) that are going to cause pain during the > transition. I see that UrlView in mutt gets it just fine. :-) Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Retrieving POP mail from server to server
On Fri, Aug 13, 2010 at 11:57:22AM +0100, James Hogarth wrote: > And yes I'd suggest fetchmail scripted to do this (given it is a one > off) so long as the email service your system is going to provide will > be storing in whatever the local user storage that fetchmail will be > dumping into... or even so long as you can parse the appropriate > .mailbox (or whatever) files and import them to your system. I think also a simple move of all messages from remote to local folder using mutt, for instance, should go. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] vim and backup files
On Tue, May 04, 2010 at 06:23:42PM +0200, Dominik Zyla wrote: > On Fri, Apr 30, 2010 at 02:34:11PM -0700, el...@spinics.net wrote: > > On Fri, 30 Apr 2010 14:22:13 -0700, Kwan Lowe > > wrote: > > > > > Check filesystems for space? Temp dir? Maybe try cleaning out your > > > .vimrc to see if some cruft in it? Also check /etc/vimrc for > > > changes.. Maybe even re-install or check to see if the packages have > > > been corrupted? > > > > Check inode availability as well. If you're out of inodes, you won't be able > > to create a file. > > You can also look at your `limit' output. Maybe one of those limits > (most possible `filesize' or `descriptors') exceeded. Can try vim -n (won't create swap file.) Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Consecutive Jobs
On Wed, Apr 07, 2010 at 11:47:10AM +, Joseph L. Casale wrote: > >If you could explain a bit more in detail it would be a lot clearer on > >what you really want. The drawback is if you cron job it on every node > >you must have a precise time server for ntp on the local subnet or your > >effectively PPPing in the wind. > > John, > They all mirror to this one file server based on a snapshot they take at > that time as the data is constantly changing. > > Once they all complete their mirror to this file server, that file server > is then instructed by ssh with key auth to rsync that data set remotely. > > The file server can handle any number of local dumps on to it, but if more > than 1 local machine instructs it to rsync remotely, that is where the trouble > starts. Looks like a FIFO. It may work by feeding the commands through a named pipe to a script that just waits for them and executes one at a time. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Consecutive Jobs
On Wed, Apr 07, 2010 at 03:57:14AM +, Joseph L. Casale wrote: > Anyone know how to submit jobs to at or anything else that allows jobs > submitted to a queue to be executed consecutively? > > I have a series of servers that submits a job via an ssh background > job but I can only have one execute at any given time. Probably batch will do it: batch executes commands when system load levels permit; in other words, when the load average drops below 0.8, or the value specified in the invocation of atd. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] bruteforce protection howto
On Sat, Mar 20, 2010 at 05:24:34PM -0500, Larry Vaden wrote: > On Sat, Mar 20, 2010 at 5:17 PM, Vadkan Jozsef > wrote: > > > > What's the best method to ban that ip [what is bruteforcig a server] > > what was logged on the logger? > > I need to ban the ip on the router pc. > > http://www.fail2ban.org/wiki/index.php/Main_Page but you may have to > run fail2ban on the server instead of on the logger. You can forward a copy of the syslog messages to the router and instruct fail2ban to act upon them instead of the default ssh log. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Email Problem
On Fri, Feb 26, 2010 at 10:34:34AM -0400, Susan Day wrote: > On Fri, Feb 26, 2010 at 9:51 AM, Simon Billis wrote: > > > > Why? > > > > That is a good question - I "guess" that google's email system thinks > > you're > > sending them spam. If you want your mail to be accepted you may need to > > have > > implemented SPF and domainkeys. > > Oh, lovely. As if I didn't have enough work to do...Thanks, google. SPF & Co. is a reaction to spam proliferation. You'd better thank the spammers. :-) Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Rescuing svn repo from *IDIOTS*
On Fri, Nov 13, 2009 at 02:55:24PM +, Stephen Nelson-Smith wrote: > A moron has checked in a DVD iso into subversion. > > How can I undo the damage, and make the repo a sensible size again? I fully understand the grief. Out of the top of my head you can use 'snvadmin dump' to get an (even larger) dump of the repo as a single file. Then feed it to svndumpfiler to reconstruct the repo and filter out the excess commits. For me it worked as advertised. > Also, is there a cunning way to get subversion to say: "Oi! Moron! > This file is huge, you can't check it in!" ? There are so called hooks server side that get triggered by the check in/out/etc. It may be possible to look at the size of the changes and reject the operation based on thresholds. I have never tried that, although. Hope this helps. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Where to download rpm packages for centos?
On Wed, Sep 16, 2009 at 10:33:12PM -0500, Peng Yu wrote: > For example, I am looking for imlib-config. Do you know > where I can download its source package. You can try general purpose RPM finders, like: http://rpm.pbone.net/ for both binary and source search and download. Try your luck by selecting CentOS5, RHEL5, Fedora 6. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dag's comment at linuxtag
On Fri, Jul 03, 2009 at 06:37:17AM -0700, Radu-Cristian FOTESCU wrote: > > no, trolling works much better on high volume lists > > like this one. > > I officially declare that whoever uses the word "troll" > is underbrained (aka stupid moron). The verb "to troll" > was invented by some ***arrogant*** F/LOSS developers > to assert that any *conversation* that looks slightly > critical to them is not a "legitimate" one, but a "wicked" > attempt to sabotage their prestige. Wait, maybe "trolling" > was not invented by some Linux/BSD developer(s), but > rather by Stalin himself! This excerpt is more informed: gnome-dictionary --look-up troll Troll Troll, v. t. [imp. & p. p. Trolled; p. pr. & vb. n. Trolling.] [OE. trollen to roll, F. tr[^o]ler, Of. troller to drag about, to ramble; probably of Teutonic origin; cf. G. trollen to roll, ramble, sich trollen to be gone; or perhaps for trotler, fr. F. trotter to trot (cf. Trot.). Cf. Trawl.] Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dag's comment at linuxtag
On Tue, Jun 30, 2009 at 03:43:41PM -0700, Radu-Cristian FOTESCU wrote: > > I Can not speak for others, but the only time i have > > seen Karanbir be stern with anyone is when they do > > deserve it. > > Well, I've read him saying in various ways and on > several occasions something that would equate "RTFM", > only it was put in such an offensive way that even > myself, as an external reader, I felt compassion for > the poor user who was asking an innocent question > just to be slapped over the face. > > > I have no idea what your deal is though with going > > after anyone and everybody. Do you just love attacking > > people in gerernal? > > Of course. I also like killing kittens and sodomizing kids. > > If telling to someone that there are issues with "his" repo > (that was RPMforge and Dag is #1 when comes to RF) is an > attack, then your world and my world are different, and *your* > world is broken. Basically, I have been answered that I cannot > ask for consistency for something that's free unless I help > fixing the issues. Fair enough. > > But then, if mentioning that KB's repo for EL5 is still having > *everything* in testing (the repo for EL4 is not in testing, > and it even wasn't in testing a few years ago when I was using it) > is still an attack... > > ...whereas KB's *offending* and *despising* answer (because *this* > is how he usually replies!) basically says that I am an idiot who > shouldn't use his repo (only that he wasn't using these exact words, > so he's technically "politically correct" in the way he's telling > people that they're morons that should shut the fsck up) is not an > attack, huh? > > Well, then raise a statue to the beloved KB, because I'm gonna shut > the fuck up. This is not a community, and I know of several people > who use ScientificLinux not because it's better, but because on their > mailing list, their developers *don't* imply that people are morons > when they spit an answer to the list. > > But now, you're right: should I have the chance to meet KB in person, > I'd punch him in the face with an infinite pleasure. Perhaps all boils down to "How To Ask Questions The Smart Way": http://www.catb.org/~esr/faqs/smart-questions.html Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dag's comment at linuxtag
On Mon, Jun 29, 2009 at 06:51:54PM -0700, Radu-Cristian FOTESCU wrote: > > led to the great compiler we have today. The same > > would hold for any large project (the kernel, firefox, etc.) > > And... are you happy with the quality of the huge $h1t which > is Firefox? Because I am not. Firefox was better than Mozilla. Epiphany is less bloated than Firefox. It's definitely worth noting that, Epiphany & Firefox popped up so quickly because they built on Mozilla's rendering, etc. That's the powerful FLOS idea: get inspired and build upon previous work to suit current needs. The other very important ingredient is people putting efforts in common projects *and* even more people using the projects and giving *constructive* feedback. > As for the Linux kernel, they pushed in all kind of crap. > Back in 1996, I was running Linux with X in only 8 Megs of RAM! > Now, I doubt I could even boot with such a memory... Things get pushed in the kernel, Xorg, etc. for a good reason, even if we fail to see it. The 2.6 kernels boot and run just fine in maybe as few as 1Mb in embedded systems and brings features and performance the 1996 version simply lacked. That's a flexibility you don't find easily elsewhere, not to mention you get it for free. Besides, the HW is getting cheaper and more efficient fast. I started programming on a 1MHz 8 bit system with 64kb of RAM, shared with the BIOS and the OS (maybe half of it left for the applications). Nowadays even a mouse driver may need much more memory. I write this email on a HW that was in the supercomputer range 10 years ago or so. But I don't know of people that double their "SW developing efficiency" every 18 months as Moore law goes for the HW. That's why I value so much the creative efforts pushing forward all kinds of features, whether I need them or not. These efforts give me an environment that helps my productivity and stimulate my creativity like nothing else. > > I fail to see why tens of micro repos are easier > > to maintain consistent than a large one. > > They're not. But at least you don't have to make people > get along. And you get a source nightmare of packages that do not get along, too. This system may produce daily problems that are multiplied by tens of thousand of end users, each of them having to spend time fixing them themselves. That's a huge value trash, in my view. I was using Dag's repo since the RH7 days. Along the years I explored alternatives as ATrpms, livna, etc. but I was always very glad to come back to the richness and stability of Dag, Matthias, Dries repos. For me they made a huge and wonderful job of putting up so much sheer value with so few resources. But things change and it's a pity to see it eroded by narrow choices, regardless of the efforts still thrown at it. > > > 7,600 packages is really too much for a couple of > > people to > > > maintain. Unless it's scaled *down*... > > > > ...or scale the maintainers up. > > Still, 7,600 is unmaintainable. For their ~20k packages, > both Debian and Ubuntu use dozens and dozens of packages. > (And I won't mention the quality of Ubuntu's packages.) > As for TUV, they decided they can only support ~2.5k packages, > regardless of the fact that they're the #1 Linux company. > > I maintain that RF is way too large to be properly maintainable. Well, you just said a few lines up that enough maintainers are proven to keep up even 3x this size. Not to mention the (PLD, I think) examples someone else brought in the thread. I see this whole issue as a matter of perceiving the real value of a well maintained and vast repo. Once that is well perceived, the effort required definitely looks a lot more worth it. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dag's comment at linuxtag
On Mon, Jun 29, 2009 at 03:57:09PM -0700, Radu-Cristian FOTESCU wrote: > I am sorry to decline your offer: I don't need access to a > 8,000-package repo, for later I could be accused of some > breakage I might have not caused. Unless RF starts from zero > (that is, by tossing whatever does not build), I am not > interested: better not touch it. Following this line of thought no new people would ever join, let's say, the GCC development team, unless the GCC project starts from scratch. Luckily, this is far from being the case. And yes, GCC underwent quite a few changes from v2 to v3 and v4, changes that broke things along their path and, finally, led to the great compiler we have today. The same would hold for any large project (the kernel, firefox, etc.) > Otherwise, everyone is free to rebuild from: > http://odiecolon.lastdot.org/el5/SRPMS/ > > If it doesn't work... c'est la vie. This is the first time > in my life that I've built RPMs, so... [...] > You know, in the F/LOSS world the idea is that the sources be > available *and* that they would build. If your repo is in the F/LOSS world, then in your view it should rebuild flawlessly, forever. "C'est la vie" is out of question. Fortunately, the way F/LOSS works is: the source is there, please contribute. The only thing certain is that anyone who cares can put spare time into it, with the best of intentions and that new contributions cannot be kept out. You may be *entitled* to demand quality from the products you *buy*, but that's an entirely different thing. > Whatever I could fix and build and I was interested in, > would normally get into my tiny repo. SRPMs available. Good luck. I fail to see why tens of micro repos are easier to maintain consistent than a large one. Besides, they will have a grand total of tens of people involved, which would definitely solve the next issue: > > But don't expect me (or dries, christoph, fabian, ...) to > > fix it because that simply *does* *not* *scale*. > > 7,600 packages is really too much for a couple of people to > maintain. Unless it's scaled *down*... ...or scale the maintainers up. Cheers, Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] iptables local forwarding
On Fri, Oct 24, 2008 at 08:25:40AM +0800, Christopher Chan wrote: > Robert Spangler wrote: >> On Thursday 23 October 2008 09:53, Chan Chung Hang Christopher wrote: >> >>> > Try adding it manually to the iptables config. >>> > >>> > # vim /etc/sysconfig/iptables >>> > >>> > And then restart iptables. >>> >>> Not recommended. Do 'service iptables save' as Filipe posted. >> >> You will need to explain why this is 'Not recommended'. > > Never had typos? What's your point? Typos can happen whenever the keyboard is used for typing. :) That is regardless if the typing goes into a GUI, a command line, or file editing. We are however supposed to test our doings. Then most errors get revealed, be them dumb typos or the more astute kind. BTW, I also prefer a nicely commented rules file instead of the dry list dumped by iptables-save. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how can I get the kernel source codes of CentOS5.2
On Mon, Aug 25, 2008 at 08:14:19PM +0800, Ian jonhson wrote: > My jobs need to recompile the kernel codes, but I don't know > how to yum the kernel source codes. This should download the .src RPM in the current dir: yumdownloader --source kernel yum-utils should be installed first. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: gcc editor for newbie (Emacs or vim or ?)
On Tue, Aug 12, 2008 at 03:27:28PM -0400, William L. Maltby wrote: > On Tue, 2008-08-12 at 20:45 +0200, Mihai T. Lazarescu wrote: > > An intuitive interface shortens the learning curve. > > An efficient interface becomes a concern after that. vi came > > to serve in an environment where most were looking simply for > > efficiency, the way they perceived it back then. And some of > > those rules are still effective today. > > I'm afraid most of the really good rules are "broken" today. Best > example is the original credo of UNIX: "Do one thing and do it well". > That was the design philosophy then. Free software development > methodology tends to subvert that. Today, "design towards mediocrity" is > the credo, ecouraging the users and developers to be less competent, > imaginative and requiring less thought. I'm afraid that addressing the average needs is a widespread trend today even outside computing. Fortunate us that besides the shells of all-in-one programs we can find and work with those building blocks of the sound, original concepts. My point was concerning Florin remark that the basic needs for building an efficient UI had changed so much over time. The only additional UI standard device we have today is the mouse and we see an explosion of *G*UI. However, almost all modern GUI recognize the keyboard command efficiency and provide a range of shortcuts for power users. The best GUI even allow for user-configurable shortcuts and macros. Through modal operation vi pushed this one step further, shortening the interaction with the keyboard. A host of frequently used commands are one key away once you get your mind set that text entering ends with ESC. I can agree that shortening the keyboard interaction may not worth that much to many people. But this does not alter the fact that visually searching entries in menus takes a lot more that a keyboard shortcut for the same task. And a shortcut made of keys plus modifiers take longer than the same or less keys with less or no modifiers. On Tue, Aug 12, 2008 at 12:06:35PM -0700, Florin Andrei wrote: > Well, when people start to fail to understand your metaphors (or switch > to the uber-literal-minded mode and attack the imperfections in the > comparisons you make, instead of debating the original topic), you know > it's pointless to continue the discussion. ;-) It's up to you to see the points addressing the original topic within the replies. > But the way this "discussion" evolved is a great illustration for why vi > still survives today. If it was a rational decision, it would have died > circa 1999. You may also fail to see why the development of mutt started about that time, borrowing "obsoleties" from both vi and mail. I'm afraid this does not make mutt a less rational decision or less usefull program, nor make of its or vim young and quite active developers nostalgics blind to progress. :) > Alright, time for me to disappear from this thread. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: gcc editor for newbie (Emacs or vim or ?)
On Tue, Aug 12, 2008 at 10:48:10AM -0700, Florin Andrei wrote: > MHR wrote: >> >> Vi is not the world's best editor > > Heh, understatement of the century. > It's an awful editor. I wish I could hire the person who came up with > the user interface, only to have the satisfaction of having him/her > fired five minutes later. With no severance package. > > It's one of the worst designs from a usability perspective. Yes, it's on > every Unix system out there. Yes, it's very complex and can be powerful > and can be extended to do a million things. Yes, you can train yourself > so you learn it well enough so that the interface is not a problem > anymore. > But all that does not negate the basic fact that it's one of the most > un-intuitive and essentially broken user interface designs ever. But > we're stuck with it, which is unfortunate. > > Note: I'm not an Emacs fan. :-) Looking in perspective vi grew up with UNIX. At times when the output device just tilted from printers to CRTs the UNIX savvy perceived efficiency mainly in terms of reusing the legacy knowledge of ed, ex, and regex as well as resources, execution time, and fast and reliable command and display time on slow machines and interfaces. In these regards vi(m) simply excelled then as it does today. An intuitive interface shortens the learning curve. An efficient interface becomes a concern after that. vi came to serve in an environment where most were looking simply for efficiency, the way they perceived it back then. And some of those rules are still effective today. Of course I use vim to write this email. :) Cheers, Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] sed
On Fri, May 23, 2008 at 08:41:19AM -0700, Scott McClanahan wrote: > Not specific to CentOS but I know you guys would be really helpful anyhow. > Basically, I have a file which has been editted in the past very similarly to > the hosts file only now I want to use it as a hosts file and need to run some > fancy sed to massage the data into shape. Currently, the data in the file is > in the form of alias>. In some cases there may not be any aliases so the end of line would > be > right after the short hostname (no space at the end either). In other cases > there could be many space separated short hostname aliases. What I have been > trying to do without success is add our domain name to the first string after > the ip address and tab character. As an example, > > == Before == > > 1.1.1.1foo > 10.10.10.10bar bar2 > 100.100.100.100foobar foobar2 foobar3 > > > == After == > > 1.1.1.1foo.contoso.com > 10.10.10.10bar.contoso.com bar2 > 100.100.100.100foobar.contoso.com foobar2 foobar3 > > Any advice on how to pull this off? Thanks. sed 's/ /.contoso.com ' Cheers, Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Locating the broken links
On Mon, Jan 28, 2008 at 01:45:43AM +0200, Ioannis Vranos wrote: > Is there any command that I can use to find the broken links that point to > non-existent files? cleanlinks from the imake package may help. Mihai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
