Does it count as elegant if you use ps? Something like:
sleep_pid=$(ps -ef | awk "\$3 == $bg && \$8 ~ /sleep/ { print $2 }")
kill $bg $sleep_pid
where the first awk conditional targets children of the background process.
This may have a race condition if $sleep_pid responds to the kill before
$bg.
On Tue, Mar 12, 2013 at 7:03 AM, Robert Citek <[email protected]>wrote:
> Hello all,
>
> I have a script that runs out of crontab that occasionally runs longer
> than some time limit. I would like the script to log when and only
> when it runs longer than some timelimit.
>
> Here was the initial prototype for the script:
>
> #!/bin/bash
> runtime=10
> sleeptime=30
> (
> sleep $sleeptime
> date >> /tmp/log.txt
> ) &
> bg=$!
> sleep $runtime
> kill $bg
>
> This works for $runtime greater than $sleeptime. However, when
> $runtime is less than $sleeptime, killing the parent process orphans
> the sleep command. When I run this command several times, I end up
> with lots of orphaned sleep processes.
>
> The quick-n-dirty solution was to substitute this for..loop for the
> sleep command:
>
> for((i=0;i<$sleeptime;i++)) ; do sleep 1 ; done
>
> It works good-enough, but am looking for a more elegant solution.
>
> Any thoughts?
>
> Regards,
> - Robert
>
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--
David Dooling
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