topic Re: Help in script in Operating System - HP-UX

Help in script

Waqar Razi — Tue, 12 Aug 2008 11:53:45 GMT

Can some one help me in writing a script with the following functionality.

Every time the script runs, it makes a directory naming config.mmddyy and stores configuration information in it. I have made a script upto this point.
Now I want to keep only the latest 5 directories and delete the diectories other than them with the information in them .

Re: Help in script

Tim Nelson — Tue, 12 Aug 2008 12:17:11 GMT

How about something like.

find /config.* - type d -mtime +5 |while read list
do
rm -r $list
done

(I would be carefull about rm -r, maybe even build a file list and rm $list then rmdir the directory.) If your list returns just "/" you will be bumming.

If you try to use each name mmddyy + 5 days you will run into the always difficult roll at EOM.

Re: Help in script

James R. Ferguson — Tue, 12 Aug 2008 12:20:33 GMT

Hi Wagar:

# ls -lt|grep ^d|tail +5|awk '{print $NF}'|xargs rmdir

...assuming that the directories are ones immediately beneath the current working directory and that they are empty. If they are not empty, but you want to delete them and their contents, then:

# ls -lt|grep ^d|tail +5|awk '{print $NF}'|xargs rm -rf

Regards!

...JRF...

Re: Help in script

Steven Schweda — Tue, 12 Aug 2008 12:51:21 GMT

> [...] config.mmddyy [...]

If you used a naming scheme like yymmdd
instead of mmddyy, it would be easier to sort
the names chronologically, so techniques like
piping "ls" output into "head" or "tail"
could do useful things (easily).

Re: Help in script

Dennis Handly — Wed, 13 Aug 2008 10:18:11 GMT

You could create 5 symlinks that point to the last 5 directories. Then when you create a new one, you shuffle them down.
To remove what the symlink points to, you can use: rm -rf symlink01/

To shuffle them down, you would have to parse the output of ll(1) to get the link target.