If you run multiple Rational Synergy sessions, set the CCM_ADDR environment variable to specify which session will run your Rational Synergy commands. If you don't set CCM_ADDR, a default address is used. This default address is read from a .ccm_addr file. This file is generated if you start a CLI session without the -m (multiple sessions) option.
The start command supports the Starting a CLI session subcommand.