Hi Dave, the command would be: ps -A | grep jackd If the output is null, there's no jackd process running. Else, there is some information-output about a jackd process 24131 ? 00:00:00 jackd Assign the command to a variable and use an if-statement with something like... if $myvariable="" ... that should do the job.... -- Best regards, Sebastian. Web: linuxaudioblog.sternenhejim.de On Mon, 2008-02-18 at 11:54 -0500, Dave Phillips wrote: > Greetings, > > I'd like to add some conditional tests to my simple scripts. For > example, I want to query the system to determine whether JACK is already > running. If it is, I'll run an app (e.g. xine or AlsaPlayer) configured > for JACK. If JACK is not running, I'll run the app without it. > > So how do I test for JACK in a simple bash shell script ? > > Similarly, I'd like to display an option to launch JACK if it isn't > already running, but I think I can figure that one for myself. :) > > Best, > > dp > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
