Comments on: A srcipt for running processes in parallel in Bash http://pebblesinthesand.wordpress.com/2008/05/22/a-srcipt-for-running-processes-in-parallel-in-bash/ Tales from the information era - tips related to Linux / computer science Mon, 11 May 2009 17:14:16 +0000 http://wordpress.com/ hourly 1 By: kawakamasu http://pebblesinthesand.wordpress.com/2008/05/22/a-srcipt-for-running-processes-in-parallel-in-bash/#comment-22 kawakamasu Tue, 02 Dec 2008 07:40:15 +0000 http://pebblesinthesand.wordpress.com/?p=8#comment-22 Thanks! I don't know, I never tried that. But since you have the PIDs, you could poll for the run times in the checkqueue routine and terminate processes if necessary. I suppose that there is a way for getting run times in Bash. Thanks!
I don’t know, I never tried that. But since you have the PIDs, you could poll for the run times in the checkqueue routine and terminate processes if necessary. I suppose that there is a way for getting run times in Bash.

]]> By: Joe http://pebblesinthesand.wordpress.com/2008/05/22/a-srcipt-for-running-processes-in-parallel-in-bash/#comment-21 Joe Mon, 01 Dec 2008 10:03:47 +0000 http://pebblesinthesand.wordpress.com/?p=8#comment-21 Thank you, great script! Using it to spawn some server instances. Any idea how to keep track (in Bash) the spawned processes and kill them after N seconds? Joe Thank you, great script!
Using it to spawn some server instances.
Any idea how to keep track (in Bash) the spawned
processes and kill them after N seconds?

Joe

]]> By: kawakamasu http://pebblesinthesand.wordpress.com/2008/05/22/a-srcipt-for-running-processes-in-parallel-in-bash/#comment-20 kawakamasu Mon, 20 Oct 2008 14:30:52 +0000 http://pebblesinthesand.wordpress.com/?p=8#comment-20 > Paul Good point, never thought of that. > Leon Roy Hmm, maybe you have some other processes running that occasionally steal your cputime. There's an command line utility called htop that you can use to monitor what your CPUs are actually doing... > Paul
Good point, never thought of that.

> Leon Roy
Hmm, maybe you have some other processes running that occasionally steal your cputime. There’s an command line utility called htop that you can use to monitor what your CPUs are actually doing…

]]> By: Leon Roy http://pebblesinthesand.wordpress.com/2008/05/22/a-srcipt-for-running-processes-in-parallel-in-bash/#comment-19 Leon Roy Sat, 18 Oct 2008 11:53:36 +0000 http://pebblesinthesand.wordpress.com/?p=8#comment-19 Great script. Curiously when I use it to batch compress a folder of .wav files to .mp3 it doesn't always take the same amount of time, sometimes finishing around 1m20s, sometimes 1m40s. Great script. Curiously when I use it to batch compress a folder of .wav files to .mp3 it doesn’t always take the same amount of time, sometimes finishing around 1m20s, sometimes 1m40s.

]]> By: Paul http://pebblesinthesand.wordpress.com/2008/05/22/a-srcipt-for-running-processes-in-parallel-in-bash/#comment-9 Paul Tue, 03 Jun 2008 19:49:02 +0000 http://pebblesinthesand.wordpress.com/?p=8#comment-9 Change: $CMD & To: eval "$CMD &" If you want to do things like: par.sh 'tr -d " " * > $(basename * .txt)-stripped.txt' *.txt Without the eval it'll treat > and $(basename...) as arguments to tr. Change:
$CMD &

To:
eval “$CMD &”

If you want to do things like:
par.sh ‘tr -d ” ” * > $(basename * .txt)-stripped.txt’ *.txt

Without the eval it’ll treat > and $(basename…) as arguments to tr.

]]>