topic ls options in Operating System - Linux

ls options

Rinky — Thu, 03 May 2007 07:13:46 GMT

how do i get the time stamp of a file in hh:mm:ss format
ls -l will give only hh:mm only..
i need even the seconds..
plsssss help

Re: ls options

spex — Thu, 03 May 2007 07:31:42 GMT

Hello,

GNU 'ls' has the '--full-time' switch. It also supports colorized output, which is a beautiful thing. The GNU coreutils depot is available here:

http://hpux.connect.org.uk/hppd/hpux/Gnu/coreutils-6.7/

Alternatively, try the following perl construct:

perl -e 'foreach(@ARGV){$time=localtime((stat($_))[9]);printf("%-30s%s\n",$_,$time)}' *

PCS

Re: ls options

Yogeeraj_1 — Thu, 03 May 2007 07:37:58 GMT

hi Rinky,

Unfortunately, using ls, you cannot get this information.

if you do man ls
you will not find any such switch.

good luck!
kind regards
yogeeraj

Re: ls options

john korterman — Thu, 03 May 2007 07:39:31 GMT

Hi rinky,

You can also try this old resource-comsuming trick:

# echo | cpio -o 2>/dev/null|cpio -ivt 2>/dev/null|awk '{print $7,$4,$5,$6}'

regards,
John K.

Re: ls options

Yogeeraj_1 — Thu, 03 May 2007 07:44:42 GMT

hi again,

Spex's perl solution works fine..

$ perl -e 'foreach(@ARGV){$time=localtime((stat($_))[9]);printf("%-30s%s\n",$_,$time)}' *

v_syt280_1.sql Thu Mar 30 08:19:02 2006
vknt1002.sql Thu Mar 30 08:19:02 2006
yd.sql Thu Mar 30 08:19:02 2006
ydcmtpfs.sql Thu Mar 30 08:19:02 2006
ydtest.sql Thu Mar 30 08:19:02 2006
$

kind regards
yogeeraj

Re: ls options

James R. Ferguson — Thu, 03 May 2007 07:48:16 GMT

Hi:

# perl -MPOSIX -le 'for (@ARGV) {-e $_ && print join " ",$_,strftime("%x %X",localtime((stat($_))[9]))}' /tmp /etc/hosts

/tmp 05/03/07 08:46:36
/etc/hosts 05/05/06 08:33:12

That is, pass as many file or directory names as arguments as you want.

Re: ls options

James R. Ferguson — Thu, 03 May 2007 07:48:30 GMT

Re: ls options

Rinky — Thu, 03 May 2007 22:28:36 GMT

actually i dint want the solution in perl.
but John`s solution works perfectly fine.
Thanks John..

Thanks to everybody...

Re: ls options

James R. Ferguson — Thu, 03 May 2007 23:07:38 GMT

Hi:

> actually i dint want the solution in perl.

Then SAY SO in your requirements up front so that we don't waste our time. You asked for help and you got it --- this time.

...JRF...

Re: ls options

Rinky — Thu, 10 May 2007 00:45:37 GMT

Ok.. one more query on ls.
in temp directory, there are files with filetype ABC and if i give
ls -lrt *ABC, it will give a listing according to timestamp.

But from other directories if i give
ls -lrt /temp/*ABC,
the output differs than the above.

y is it different?? any idea??

Re: ls options

Dennis Handly — Thu, 10 May 2007 07:32:25 GMT

>ls -lrt *ABC, it will give a listing according to timestamp.

>But from other directories if i give
ls -lrt /temp/*ABC,
the output differs than the above.

Different how? I just see the full path vs just the filename:
Dec 14 2005 threadinit.o
Dec 14 2005 /var/tmp/threadinit.o

Re: ls options

Rinky — Thu, 21 Jun 2007 03:18:41 GMT

Yes,

ls -rt will give the right output only till the minutes.
i.e if the files are all created in one minute, with few seconds gap, ls will give the output in alphabetical order.

Is there any way to get the order right, keeping in mind the seconds of creation also?

Re: ls options

Dennis Handly — Mon, 26 Sep 2011 03:10:40 GMT

>ls -rt will give the right output only till the minutes.

Since ls(1) has the timestamp in seconds, you have to assume it sorts based on that. Not minutes then alpha.

>Is there any way to get the order right, keeping in mind the seconds

This is done.
$ touch -t 200706210200.01 aa
$ touch -t 200706210200.09 zz
$ ll -t -og
-rw-rw-r-- 0 Jun 21 02:00 zz
-rw-rw-r-- 0 Jun 21 02:00 aa
$ ll -rt -og
-rw-rw-r-- 0 Jun 21 02:00 aa
-rw-rw-r-- 0 Jun 21 02:00 zz

You can also change the ls output format by looking at these posts:

http://h30499.www3.hp.com/t5/tag/ls.cat/tg-p