[LAU] jack2 help?

The JACK (1) page [0] references this mailing list for possible dialog about jack usage. I am using the jack2 daemon. I am launching a jack aware application (OBS), but the connection to jack is not being made automatically, so I use jack_connect to make the connection between the two ports (system mic and OBS reader). Is there a "jack_FOO" CLI tool that can be used to query what available ports there are? The reason being is I need to put a sleep into my script to connect the jack ports: /usr/bin/obs & sleep 10 jack_connect system:out_1 OBS:jack_in I'd like to eliminate the sleep command and poll jack to see if OBS has any port available. What do you think? Thanks! -m [0] http://jackaudio.org/community.html