Package: rcs

"rcs" package binaries on CentOS:

/usr/bin/ci /usr/bin/co /usr/bin/ident /usr/bin/merge /usr/bin/rcs /usr/bin/rcsclean /usr/bin/rcsdiff /usr/bin/rcsfreeze /usr/bin/rcsmerge /usr/bin/rlog

You may install this package on CentOS with yum install rcs

"rcs" package binaries on Debian:

/usr/bin/ci /usr/bin/co /usr/bin/ident /usr/bin/merge /usr/bin/rcsclean /usr/bin/rcs /usr/bin/rcsdiff /usr/bin/rcsmerge /usr/bin/rlog

You may install this package on Debian with apt-get install rcs