SCCS (man1p)
sccs — front end for the SCCS subsystem (DEVELOPMENT)
sccs — front end for the SCCS subsystem (DEVELOPMENT)
qselect — select batch jobs
patch — apply changes to files
date — write the date and time
sh — shell, the standard command language interpreter
chgrp — change the file group ownership
grep — search a file for a pattern
chmod — change the file modes
nohup — invoke a utility immune to hangups
nl — line numbering filter