The opensrf_all and opensrf_ctl scripts will be installed into the BINDIR directory. opensrf_ctl is used to start the application services after jabber and the router have been started. opensrf_all starts Chop Chop, the router and application services, so it's the only script of the two you will need to use directly when first starting the system. If you ever want to restart the app servers only, then use opensrf_ctl by itself.
Edit the variables at the top of opensrf_all to point to the correct bootstrap.conf, log locations, etc. You also have the option to tell opensrf_all not to start Chop Chop if you are using jabberd2 instead by setting other variables at the top of the script.