The Control-M/Agent startup script is a ready-made startup script called rc.agent_user provided to automatically start the Control-M/Agent during a system boot.

It is provided with the basic functionality to start the Control-M/Agent or stop before a system shutdown.
 
The rc.agent_user script reads a Control-M/Agent configuration parameter AGENT_STATUS from the Control-M/Agent ctm_agent_status.dat file located in [Agent Home]/ctm/data

The value of this parameter helps the script to decide whether a start is needed by the script.

The value of this parameter is either STARTED or STOPPED

If it is STOPPED, the rc.agent_user will not take the start action.

Additional Information:
For more information regarding the Control-M/Agent automatic startup procedure refer to our Control-M/Agent Installation Guide under the section Configuring the automatic startup procedure for Control-M/Agent on UNIX.
See article 000022305 for further information including a video regarding automatic startup on Unix