Running a shell command for a specific period of time

Alex Dean alex at crackpot.org
Wed Oct 26 08:37:07 MST 2005


My skills with shell scripting is pretty minimal, but would this  
work...?

* Run 'tcpdump' via cron.  Save the pid of program in a file.
* 24 hours (minus 1 second) later run 'kill' via cron, using the  
saved pid.

alex

On Oct 26, 2005, at 8:12 AM, Erik Bixby wrote:

> I was wondering if anyone knew a way to allow a shell command to  
> run for a specific period of time.  In this particular case, I want  
> tcpdump to run for 23 hours, 59 minutes, 59 seconds.  I couldn't  
> find anything in the tcpdump man page that gave me the impression  
> that tcpdump itself has that functionality.  And, I couldn't find  
> anything in a quick google search.  I also thought it was an  
> interesting scripting trick that I don't know, and thought I'd ask  
> you nice folks...
> -Erik
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