cvs.csh (5) - Linux Manuals
cvs.csh: C shell log-in script for CVS users
NAMEcvs.sh - C shell log-in script for CVS users
DESCRIPTIONThe cvs.csh script is sourced when a user of a C log-in shell is logged in. The purpose is to set CVS_RSH environment variable, so that a cvs user connecting to a remote CVS server utilizes SSH-secured connection by default.