asked on

Shell script to housekeep lower version files lpt$vpn.xxx

I have the following files (& new files added daily in cron job) in a folder /opt/avscan
-rwxr-xr-x 1 root root 60M Jul 12 20:50 /opt/uvscan/lpt$vpn.787
-rwxr-xr-x 1 root root 60M Jul 10 20:50 /opt/uvscan/lpt$vpn.783
-rwxr-xr-x 1 root root 60M Jul 13 23:57 /opt/uvscan/lpt$vpn.789
-rwxr-xr-x 1 root root 60M Jul 9 21:49 /opt/uvscan/lpt$vpn.781
-rwxr-xr-x 1 root root 60M Jul 14 21:52 /opt/uvscan/lpt$vpn.791
-rwxr-xr-x 1 root root 60M Jun 30 06:17 /opt/uvscan/lpt$vpn.761
-rwxr-xr-x 1 root root 60M Jul 11 20:49 /opt/uvscan/lpt$vpn.785

I would like to add into the very same Bash Shell script (I suppose I don't
have to share the existing script) that pulls down lpt$vpn.xxxx (can grow
to lpt$vpn.1001 & higher) that will delete /housekeep away lower version
files. In this case, we'll leave behind only lpt*.791

I suppose we can use the ctime or atime as a way of deciding which file(s)
to delete:
find /opt/avscan -ctime ... | sort based on date/timing
& then "rm `sorted lpt* list of files | grep -v `tail -1` " or something like that

Most appreciate if anyone can provide the precise codes & a tested script

ASKER CERTIFIED SOLUTION

woolmilkporc

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sunhux

ASKER

Thanks very much, I'll test it out in 30-32 hours' time :
if there's no further clarifications will close this thread

sunhux

ASKER

One query: the script given should work in Bash, Korn or Bourne shells, right?

woolmilkporc

Bash and ksh - no problem.

With "Bourne Shell", do you mean the (very) traditional old bsh?

If so, you will have to run my first suggestion there this way:

echo rm `ls -t '/opt/uvscan/lpt$vpn.'* | tail +2`

My second version should work as posted.