[gentoo-user] Re: [OT] Finding old files

[Grant Edwards]

On 2010-11-19, Peter Humphrey <peter@××××××××××××××.org> wrote:
> On Friday 19 November 2010 16:40:37 Grant Edwards wrote:
>> On 2010-11-19, Peter Humphrey <peter@××××××××××××××.org> wrote:

>>> Just to expose my ignorance again, would someone lift my blinkers
>>> please? I'm recovering from an infection and my brain is stuck.
>>>
>>> It's time to start pruning old stuff from the website I run, which
>>> has 2200 files in 200 directories.
>>>
>>> I'm trying to find old images like this:
>>> find . -iname \*.jpg -exec ls '-cdl' {} \; | cut -d \  -f 5-10
>>
>> It's not obvious how that command finds old images.  Can you explain
>> what it's supposed to do?
>
> The cut command simply strips off the permissions, owner, group and
> file size.

OK, but I still don't see how that "finds old image files", but
whatever.

> Never mind, anyway. I've done it by using separate steps instead of
> trying to combine them. I'm still puzzled though at the different
> behaviour of ls between command-line and execution by find.

>>> find . -iname \*.jpg -exec ls '-cdl "--time-style=full-iso"' {} \; |\
>>>         cut -d \  -f 5-10

What different behavior?

That ls command doesn't work from the command line either:

  $ ls '-cdl "--time-style=full-iso"' foo
  ls: invalid option -- ' '
  Try ls --help' for more information.

The quotes cause both option specifiers '-cdl' and
'--time-style=full-iso' to be passed to 'ls' as single string with
whitespace in the middle of it.  That's not how options are passed to
Unix command line utilities.

I think what you intended was

  $ ls -cdl --time-style=full-iso foo
  -rw-r--r-- 1 grante users 96 2010-11-19 11:44:45.000000000 -0600 foo

IOW:

  $ find -iname '*.jpg' -exec ls -cdl --time-style=full-iso {} \; | cut -d ' ' -f 5-10
  40369 2010-03-22 13:59:28.000000000 -0500 ./rfc2217-xon-xoff/right_cncbaron_small.jpg
  110641 2010-03-23 10:21:16.000000000 -0500 ./rfc2217-xon-xoff/DMFreeWire-1-Port 300dpi
  22330 2010-03-22 14:01:26.000000000 -0500 ./rfc2217-xon-xoff/clip_image002_0006.jpg
  [...]

Note that your "cut" doesn't work right for filenames that contain
spaces...
  
-- 
Grant Edwards               grant.b.edwards        Yow! Maybe I should have
                                  at               asked for my Neutron Bomb
                              gmail.com            in PAISLEY --