Unix in a Nutshell, 4th Edition

Keywords

$Author$	Username of person who checked in the revision.
$Date$	Date and time of check-in.
$Header$	A title that includes the RCS file’s full pathname, revision number, date, author, state, and (if locked) the person who locked the file.
$Id$	Same as $Header$, but exclude the full pathname of the RCS file.
$Locker$	Username of person who locked the revision. If the file isn’t locked, this value is empty.
$Log$	The message that was typed during check-in to describe the file, preceded by the RCS filename, revision number, author, and date. Log messages accumulate rather than being overwritten.
	RCS uses the “comment leader” of the $Log$ line for the log messages left in the file. The comment leader stored in the RCS file is useful only for exchanging files with older versions of RCS.
$Name$	The symbolic name used to check in the revision, if any.
$RCSfile$	The RCS filename, without its pathname.
$Revision$	The assigned revision number.
$Source$	The RCS filename, including its pathname.
$State$	The state assigned by the -s option of ci or rcs.