$ cvs update myprog.pl $ cvs status myprog.pl File: myprog.pl Status: Up-to-date Working revision: 1.31 Repository revision: 1.31 /mydir/myprog.pl,v # Note the order of the versions: $ cvs update -j 1.31 -j 1.30 myprog.pl $ cvs commit -m 'roll back to version 1.30' myprog.pl