On Sat, 21 Jul 2007 19:04:30 -0400, Greg wrote:

> I am trying to capture video with specific start and stop times.
> What I'd like to do is begin recording at time, which I could
> presumably do with "at" or "cron". But how do I have the command stop
> at a later time? I could probably write a simple script to do a "ps",
> grep for the PID and kill it. However, I'm sure there is a more
> elegant way to accomplish this already out there.

In the script you start with cron, or at, I'd use an & at the end
of the command starting the capturecmd, to put it in the background,
and then, in the script, run
echo "killall capturecmd"|at now + 1 hours

That way you don't have to bother with process ids.

You may want to experiment with which signal to use, to ensure the
files get closed properly. For example, SIGQUIT (3), may be better
then SIGTERM (15), which is the default. I haven't experimented with
this, so I'm not sure.

Regards, Dave Hodgins

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