Cleaning up after a script on shut down

[Heike C. Zimmerer]

Oliver Grawert <ogra at ubuntu.com> writes:

> hi,
> Am Sonntag, den 23.08.2009, 16:22 -0700 schrieb Ray Parrish:
>
>> I just need to remove two files on shutdown, but their names change with 
>> the PID of the script.
>
> if its a shell script, use the trap call at the top of your code, it
> will automatically run the cleanup function if it catches one of the
> listed signals (1 2 3 6 9 15):
>
> --- snip ---
>
> trap cleanup 1 2 3 6 9 15
>
> cleanup(){
> ...

In bash, you can set a trap on exit:

  cleanup(){
    ... cleanup code ...
  }
  trap cleanup EXIT

  
This will catch all possible reasons for exit, including notmal return
and signals other than the ones you named.

Heike