The utilities provided with Replication Agent are agt_service, ra, and ra_admin.
agt_service – runs a Replication Agent instance as a Windows service.
ra – starts a Replication Agent instance, or returns the Replication Agent software version number.
ra_admin – creates, copies, verifies, and deletes Replication Agent instances, or lists all verifiable, installed Replication Agent instances on a machine.
Replication Agent utilities are supplied as batch files for Windows platforms and as shell scripts for UNIX platforms. The utility files reside in the bin subdirectory, under the Replication Agent base directory.
You can use the -help option with either ra_admin or ra to obtain information about that utility.