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