Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread King Beowulf
On 06/25/2018 05:08 PM, Michael Rasmussen wrote:
> On 2018-06-25 16:18, Steve Christiansen wrote:
>> On 6/25/2018 3:52 PM, Rich Shepard wrote:
>>
>>> According to 'man ls' the -d option should 'list directories
>>> themselves, not their
>>> contents'. But, here it doesn't work. For example from within ~/:
>>>
>>> $ ls -d
>>> ./
>>>
>>> $ ls --directory
>>> ./
>>>
>>>   I doubt this is a Slackware issue and I'm curious why it might not be
>>> working as expected. Has anyone else run into this issue?
>>>
>>> Rich
>>> ___
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>>>
>>
>> Rich,
>> It's working as expected.
>> "ls" with no arguments lists the contents of the current directory.
>> "ls -d" with no other arguments lists the current directory, not its
>> contents, which is of course "."
> 
> To expand that on that correct response,
> 
> try ls -d */
> 
> for an edited example:
> michael$ ls -d */
> Documents
> Downloads
> Finance
> Pictures
>   ...
> 
> 
> 

Rich,

Indeed, another unfortunate example of bad documentation grammar.
programmers are historically poor at this.

"list directories themselves, not their contents" talks about the
directory you are in, not the directories _below_ the one you are in
(i.e. contents).

So I would write the description as
"list the current directory, not its contents"

"ls -l" assumes "ls -l ."
so
"ls -d" assumes ls -d ."

ls [OPTION]... [FILE]...

the [FILE] is not really optional!  We tend to forget about "." and ".."

As per Michael above, if you what the directory "contents" of where you are:
ls -d *  # assumes "./*"
ls -d */ # assumes "./*"
ls -d $PWD   # expanded "."
ls -d $PWD/*

0r

ls -d /*

-Ed



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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Tomas Kuchta
Wow .. so many responses ...

I also feel that I should express my outrage about your daring "ls does not
do what it should". Pretty confident statement!

Well, the problem is that ./ is the directory you are trying to list in
your example. There is also ../ present.

These dot names are important for traversing the directory tree back.
Without them life would be much more difficult and also significantly
slower.

Git is popular example how painful it can be if you can trace
ownership/relationship one way only. Linus is my hero, but this seems to be
some oversight.

Tomas


On Mon, Jun 25, 2018, 5:41 PM Rich Shepard  wrote:

> On Mon, 25 Jun 2018, Brian Stanaland wrote:
>
> > I don't understand why this works but...
> >
> > ls -d */
>
> Brian,
>
>Okay ... that's another interesting solution.
>
> Thanks,
>
> Rich
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Rich Shepard

On Mon, 25 Jun 2018, Brian Stanaland wrote:


I don't understand why this works but...

ls -d */


Brian,

  Okay ... that's another interesting solution.

Thanks,

Rich
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Rich Shepard

On Mon, 25 Jun 2018, John Meissen wrote:


I generally take the easy way and just do
 ls -l | grep drw

You could do
 find . -type d -maxdepth 1

Or if you want it sorted,
 find . -type d -maxdepth 1 | sort

Each has it's own quirks.


  Thanks, John.

Rich
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Michael Rasmussen

On 2018-06-25 16:18, Steve Christiansen wrote:

On 6/25/2018 3:52 PM, Rich Shepard wrote:

According to 'man ls' the -d option should 'list directories 
themselves, not their

contents'. But, here it doesn't work. For example from within ~/:

$ ls -d
./

$ ls --directory
./

  I doubt this is a Slackware issue and I'm curious why it might not 
be

working as expected. Has anyone else run into this issue?

Rich
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Rich,
It's working as expected.
"ls" with no arguments lists the contents of the current directory.
"ls -d" with no other arguments lists the current directory, not its
contents, which is of course "."


To expand that on that correct response,

try ls -d */

for an edited example:
michael$ ls -d */
Documents
Downloads
Finance
Pictures
  ...



--
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Be Appropriate && Follow Your Curiosity
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Steve Christiansen

On 6/25/2018 4:38 PM, Brian Stanaland wrote:


I don't understand why this works but...

ls -d */

[root@li1233-197 log]# ls -d */
anaconda/  audit/  chrony/  httpd/  rhsm/  sa/  tuned/

Brian


Brilliant! It works because of shell globbing. Compare to
echo */

Steve




On Mon, Jun 25, 2018 at 7:34 PM, John Meissen  wrote:


rshep...@appl-ecosys.com said:

What option would you use to list only subdirectories and not files

in the

cwd or the subdirectories?

I generally take the easy way and just do
   ls -l | grep drw

You could do
   find . -type d -maxdepth 1

Or if you want it sorted,
   find . -type d -maxdepth 1 | sort

Each has it's own quirks.



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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Steve Christiansen

On 6/25/2018 4:22 PM, Rich Shepard wrote:


Steve,

  I interpreted the man page as using the -d option to list only
subdirectories of the cwd.

  Why would ls have an option to tell you you're in the current working
directory?


I agree that -d by itself is next to useless, but it's helpful with 
wildcards.
To list the names of files and directories beginning with, say, the 
letter "a"

ls -d a*
The -d prevents the command from listing directories' contents instead 
of their names.




  What option would you use to list only subdirectories and not files 
in the

cwd or the subdirectories?


I don't know if ls will do that without some kind of filter.
I usually do something like
find * -type d -prune
The -prune prevents recursion all the way down the directory tree.



Rich
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Brian Stanaland
I don't understand why this works but...

ls -d */

[root@li1233-197 log]# ls -d */
anaconda/  audit/  chrony/  httpd/  rhsm/  sa/  tuned/

Brian


On Mon, Jun 25, 2018 at 7:34 PM, John Meissen  wrote:

>
> rshep...@appl-ecosys.com said:
> >What option would you use to list only subdirectories and not files
> in the
> > cwd or the subdirectories?
>
> I generally take the easy way and just do
>   ls -l | grep drw
>
> You could do
>   find . -type d -maxdepth 1
>
> Or if you want it sorted,
>   find . -type d -maxdepth 1 | sort
>
> Each has it's own quirks.
>
>
>
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread John Meissen


rshep...@appl-ecosys.com said:
>What option would you use to list only subdirectories and not files in the
> cwd or the subdirectories? 

I generally take the easy way and just do
  ls -l | grep drw

You could do 
  find . -type d -maxdepth 1

Or if you want it sorted,
  find . -type d -maxdepth 1 | sort

Each has it's own quirks.



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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Johnathan Mantey
My memory may be failing me.  I'm pretty sure I used '-d' to get a listing
of all entries in the cwd that are marked as directories.  So if I $(mkdir
foo bar baz) and then use 'ls -d' I expect to see "./  ./foo ./bar ./baz".

On Mon, Jun 25, 2018 at 4:18 PM, Steve Christiansen 
wrote:

> On 6/25/2018 3:52 PM, Rich Shepard wrote:
>
> According to 'man ls' the -d option should 'list directories themselves,
>> not their
>> contents'. But, here it doesn't work. For example from within ~/:
>>
>> $ ls -d
>> ./
>>
>> $ ls --directory
>> ./
>>
>>   I doubt this is a Slackware issue and I'm curious why it might not be
>> working as expected. Has anyone else run into this issue?
>>
>> Rich
>> ___
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>>
>>
> Rich,
> It's working as expected.
> "ls" with no arguments lists the contents of the current directory.
> "ls -d" with no other arguments lists the current directory, not its
> contents, which is of course "."
>
> Steve
>
>
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Rich Shepard

On Mon, 25 Jun 2018, Steve Christiansen wrote:


It's working as expected.
"ls" with no arguments lists the contents of the current directory.
"ls -d" with no other arguments lists the current directory, not its 
contents, which is of course "."


Steve,

  I interpreted the man page as using the -d option to list only
subdirectories of the cwd.

  Why would ls have an option to tell you you're in the current working
directory?

  What option would you use to list only subdirectories and not files in the
cwd or the subdirectories?

Rich
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Rich Shepard

On Mon, 25 Jun 2018, Dick Steffens wrote:


Results on UbuntuMATE 16.04:

rsteff@ENU-2:~$ ls -d
.
rsteff@ENU-2:~$


  Huh! I'm glad to see I'm not the only one missing the expected results.

  Is there a mail list where this deficiency can be pointed out to the
appropriate developer(s)?

Thanks, Dick,

Rich
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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Steve Christiansen

On 6/25/2018 3:52 PM, Rich Shepard wrote:

According to 'man ls' the -d option should 'list directories 
themselves, not their

contents'. But, here it doesn't work. For example from within ~/:

$ ls -d
./

$ ls --directory
./

  I doubt this is a Slackware issue and I'm curious why it might not be
working as expected. Has anyone else run into this issue?

Rich
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Rich,
It's working as expected.
"ls" with no arguments lists the contents of the current directory.
"ls -d" with no other arguments lists the current directory, not its 
contents, which is of course "."


Steve

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Re: [PLUG] ls -d does not work as it should

2018-06-25 Thread Dick Steffens

On 06/25/2018 03:52 PM, Rich Shepard wrote:
According to 'man ls' the -d option should 'list directories 
themselves, not their

contents'. But, here it doesn't work. For example from within ~/:

$ ls -d
./

$ ls --directory
./

  I doubt this is a Slackware issue and I'm curious why it might not be
working as expected. Has anyone else run into this issue?


Results on UbuntuMATE 16.04:

rsteff@ENU-2:~$ ls -d
.
rsteff@ENU-2:~$

--
Regards,

Dick Steffens


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[PLUG] ls -d does not work as it should

2018-06-25 Thread Rich Shepard

  According to 'man ls' the -d option should 'list directories themselves, not 
their
contents'. But, here it doesn't work. For example from within ~/:

$ ls -d
./

$ ls --directory
./

  I doubt this is a Slackware issue and I'm curious why it might not be
working as expected. Has anyone else run into this issue?

Rich
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Rich Shepard

On Mon, 25 Jun 2018, Mark Phillips wrote:


Mostly a heating expertjust put the computer outside in July and watch
it melt! ;)


  Think of it as dry curing to preserve it without refrigeration.

Rich
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Mark Phillips
Mostly a heating expertjust put the computer outside in July and watch
it melt! ;)

Mark

On Mon, Jun 25, 2018 at 9:39 AM, Paul Heinlein  wrote:

> On Mon, 25 Jun 2018, Mark Phillips wrote:
>
> Here is one in Arizona!
>>
>
> Our system cooling expert? :-)
>
>
> --
> Paul Heinlein
> heinl...@madboa.com
> 45°38' N, 122°6' W
>
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Chuck Hast
I am having to learn how to keep red sand out of everything. That is the
color
and basis for dirt around here. It gets in everything, and it is very fine,
and very
red.


On Mon, Jun 25, 2018 at 11:39 AM, Paul Heinlein  wrote:

> On Mon, 25 Jun 2018, Mark Phillips wrote:
>
> Here is one in Arizona!
>>
>
> Our system cooling expert? :-)
>
>
> --
> Paul Heinlein
> heinl...@madboa.com
> 45°38' N, 122°6' W
>
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>


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I can do all things through Christ which strengtheneth me.
Ph 4:13 KJV
Todo lo puedo en Cristo que me fortalece.
Fil 4:13 RVR1960
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Paul Heinlein

On Mon, 25 Jun 2018, Mark Phillips wrote:


Here is one in Arizona!


Our system cooling expert? :-)

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Re: [PLUG] [OT ? ?? ???] Linux and computer literacy

2018-06-25 Thread Russell Senior
I am all for exploring weird corners out of curiosity.  But your aversion
to using network devices to do networking is just perverse.

I spent the Thursday-Saturday re-exploring dial-up modem networking. Turns
out I had 5 dial-up modems of various descriptions in my basement. I was at
ToorCamp on Orcas Island in the San Juan Islands in northwestern
Washington, where ShadyTel had set up a temporary telephone system complete
with twisted pair runs to tents and T1 trunk lines between upper and lower
camp, and indecipherable service request forms. Along with some others, I
rediscovered (approximately) how mgetty works. We made and answered dialup
phone calls, we re-remembered Hayes AT commands, and wrote a
rudimentary-but-effective bulletin board system using Bash, the Bourne
Again Shell. We had mixed success with fax, because we hadn't brought a fax
machine with us, and it was difficult to find reliable information on the
internet today that described how to send random images on a file system
from a scannerless fax/modem. It was all great fun. For a few days. Because
we all knew how to do it once, and it had a nostalgic appeal.

When I got home, I gladly returned to ethernet. Because I want to be able
to copy files to accomplish other goals before my brief biological
existence has expired.

If you want to avoid ethernet, it would be super helpful to explain why, so
we can better understand the motivation behind your constraints.

On Mon, Jun 25, 2018 at 9:05 AM, wes  wrote:

> On Mon, Jun 25, 2018 at 6:43 AM, Richard Owlett 
> wrote:
>
> > On 06/24/2018 06:48 PM, wes wrote:
> >
> >> [snip]
> >>
> >> I've just ordered one so I can play with it for a bit myself. Perhaps at
> >> the next Linux Clinic, if we have time, we can invite Richard to
> >> participate remotely.
> >>
> >
> > Should be "educational" ;/
> > I know of the existence of software, but have never attempted using.
> > What software is used? Is there a good tutorial for someone coming to it
> > cold?
>
>
> What do you normally use to copy files? Probably something similar to that.
>
>
> >
> >
> >> I also found the following writeups of people doing similar things with
> >> this device:
> >>
> >> http://paulswasteland.blogspot.com/2014/01/getting-prolific-
> >> pl-2501-based-usb-to.html
> >> https://www.linuxquestions.org/questions/linux-networking-3/
> >> host-to-host-cable%3B-no-usb0-779573/
> >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/516923
> >> https://www.raspberrypi.org/forums/viewtopic.php?t=131042
> >>
> >> The last one suggests that it "just works" - the previous 3 are older
> and
> >> talk about requiring a patch to a kernel module to get this cable to
> work.
> >> We don't really know what Richard's particular situation is.
> >>
> >
> > The last one triggered some searches and following a mish-mash of links.
> > I saw multiple mention of "USBNET" but I don't any Debian references
> > although the are Ubuntu related links.
> >
> > When searching Synaptic separately for Avahi and zeroconf I do have
> > several modules installed. Am I missing a particular module. I'm
> currently
> > running Debian 9 but don't have the DVD set. I have a Debian 8 set and
> will
> > do a less minimalist install.
> >
> > I also suspect that I need to use an older version to math what various
> > references were using. I suspect that change of device naming conventions
> > is muddying the waters - I've DVD sets going back to Squeeze.
> >
> >
> You can probably avoid that requirement by configuring the network
> interfaces manually, assuming there is not some missing piece of the puzzle
> here. I haven't yet seen you attempt that and report results (maybe I
> missed it).
>
> -wes
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Mark Phillips
Here is one in Arizona!

Mark

On Mon, Jun 25, 2018 at 8:08 AM, Rich Shepard 
wrote:

> On Mon, 25 Jun 2018, Chuck Hast wrote:
>
> Well, I know that we have 1 in MO (RichardO.) I am in OKC, OK, and now NY,
>> wonder where else we have people.
>>
>
>   In the past we had members in Toronto, Fort Collins, and Belgium, plus
> others I don't recall.
>
> Rich
>
>
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Re: [PLUG] [OT ? ?? ???] Linux and computer literacy

2018-06-25 Thread wes
On Mon, Jun 25, 2018 at 6:43 AM, Richard Owlett  wrote:

> On 06/24/2018 06:48 PM, wes wrote:
>
>> [snip]
>>
>> I've just ordered one so I can play with it for a bit myself. Perhaps at
>> the next Linux Clinic, if we have time, we can invite Richard to
>> participate remotely.
>>
>
> Should be "educational" ;/
> I know of the existence of software, but have never attempted using.
> What software is used? Is there a good tutorial for someone coming to it
> cold?


What do you normally use to copy files? Probably something similar to that.


>
>
>> I also found the following writeups of people doing similar things with
>> this device:
>>
>> http://paulswasteland.blogspot.com/2014/01/getting-prolific-
>> pl-2501-based-usb-to.html
>> https://www.linuxquestions.org/questions/linux-networking-3/
>> host-to-host-cable%3B-no-usb0-779573/
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/516923
>> https://www.raspberrypi.org/forums/viewtopic.php?t=131042
>>
>> The last one suggests that it "just works" - the previous 3 are older and
>> talk about requiring a patch to a kernel module to get this cable to work.
>> We don't really know what Richard's particular situation is.
>>
>
> The last one triggered some searches and following a mish-mash of links.
> I saw multiple mention of "USBNET" but I don't any Debian references
> although the are Ubuntu related links.
>
> When searching Synaptic separately for Avahi and zeroconf I do have
> several modules installed. Am I missing a particular module. I'm currently
> running Debian 9 but don't have the DVD set. I have a Debian 8 set and will
> do a less minimalist install.
>
> I also suspect that I need to use an older version to math what various
> references were using. I suspect that change of device naming conventions
> is muddying the waters - I've DVD sets going back to Squeeze.
>
>
You can probably avoid that requirement by configuring the network
interfaces manually, assuming there is not some missing piece of the puzzle
here. I haven't yet seen you attempt that and report results (maybe I
missed it).

-wes
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Rich Shepard

On Mon, 25 Jun 2018, Chuck Hast wrote:


Well, I know that we have 1 in MO (RichardO.) I am in OKC, OK, and now NY,
wonder where else we have people.


  In the past we had members in Toronto, Fort Collins, and Belgium, plus
others I don't recall.

Rich

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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Richard Owlett

On 06/25/2018 09:41 AM, Chuck Hast wrote:

Well, I know that we have 1 in MO (RichardO.) I am in OKC, OK, and now NY,
wonder where else we have people.


I recall someone in Australia.



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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Chuck Hast
Well, I know that we have 1 in MO (RichardO.) I am in OKC, OK, and now NY,
wonder where else we have people.


On Mon, Jun 25, 2018 at 9:11 AM, Paul Heinlein  wrote:

> On Mon, 25 Jun 2018, Paul Heinlein wrote:
>
> Remember our motto: You're a PLUG member is you say you're a PLUG member.
>>
>
> s/is/if/
>
> Sigh. Obviously a pre-coffee response.
>
> Friends don't let friends drive e-mail without caffeine.
>
>
> --
> Paul Heinlein
> heinl...@madboa.com
> 45°38' N, 122°6' W
>
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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Paul Heinlein

On Mon, 25 Jun 2018, Paul Heinlein wrote:


Remember our motto: You're a PLUG member is you say you're a PLUG member.


s/is/if/

Sigh. Obviously a pre-coffee response.

Friends don't let friends drive e-mail without caffeine.

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Re: [PLUG] Introduction - from Niagara Falls NY

2018-06-25 Thread Paul Heinlein

On Sun, 24 Jun 2018, J. Hart wrote:

I have been following your activities both on the PLUG list and via live 
streaming from the meetings for the last couple of months, and thought it 
might be time to introduce myself.


Remember our motto: You're a PLUG member is you say you're a PLUG 
member. It's good to hear we're expanding from the current American 
northwest to the old American northwest!


I've pretty heavily involved with Linux itself for over twenty 
years, having started to use it when the lab began a changeover from 
the many other Unix systems they were using at the time (ex. 
SunOS/Solaris, IRIX, HP-UX, AIX, various Connection Machines, etc).


I was able to avoid AIX, but SunOS, IRIX, and HP-UX (ick!) have all 
fallen under my purview at one time or another. We still use the 
Solaris-based OmniOS for file-server duties.


Glad you decided to introduce yourself! Welcome!

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Re: [PLUG] [OT ? ?? ???] Linux and computer literacy

2018-06-25 Thread Richard Owlett

On 06/24/2018 06:48 PM, wes wrote:

[snip]

I've just ordered one so I can play with it for a bit myself. Perhaps at
the next Linux Clinic, if we have time, we can invite Richard to
participate remotely.


Should be "educational" ;/
I know of the existence of software, but have never attempted using.
What software is used? Is there a good tutorial for someone coming to it 
cold?




I also found the following writeups of people doing similar things with
this device:

http://paulswasteland.blogspot.com/2014/01/getting-prolific-pl-2501-based-usb-to.html
https://www.linuxquestions.org/questions/linux-networking-3/host-to-host-cable%3B-no-usb0-779573/
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/516923
https://www.raspberrypi.org/forums/viewtopic.php?t=131042

The last one suggests that it "just works" - the previous 3 are older and
talk about requiring a patch to a kernel module to get this cable to work.
We don't really know what Richard's particular situation is.


The last one triggered some searches and following a mish-mash of links.
I saw multiple mention of "USBNET" but I don't any Debian references 
although the are Ubuntu related links.


When searching Synaptic separately for Avahi and zeroconf I do have 
several modules installed. Am I missing a particular module. I'm 
currently running Debian 9 but don't have the DVD set. I have a Debian 8 
set and will do a less minimalist install.


I also suspect that I need to use an older version to math what various 
references were using. I suspect that change of device naming 
conventions is muddying the waters - I've DVD sets going back to Squeeze.



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