Since I am running a Juniper SRX at home and its not really my native firewall language I have learned a few good commands that I need to remember.

Check what changes will be done before commit

Before doing a commit it might be a good idea to just check what changes you are about to commit. With JunOS it is easy.

show | compare rollback 0

Get more verbose information during commit

commit | display detail

Show current flows (states) in the firewall

show security flow session