Here is the list of keywords currently maintained by
co(1). All times are given in Coordinated Universal Time (UTC, sometimes called GMT) by default, but if the files were checked out with
co's -zzone option, times are given with a numeric time zone indication appended.
$Author$
The login name of the user who checked in the revision.
$Date$
The date and time the revision was checked in.
$Header$
A standard header containing the full pathname of the RCS file, the revision number, the date and time, the author, the state, and the locker (if locked).
$Id$
Same as $Header$, except that the RCS filename is without a path.
$Locker$
The login name of the user who locked the revision (empty if not locked).
$Log$
The log message supplied during checkin. For ident's purposes, this is equivalent to $RCSfile$.
$Name$
The symbolic name used to check out the revision, if any.
$RCSfile$
The name of the RCS file without a path.
$Revision$
The revision number assigned to the revision.
$Source$
The full pathname of the RCS file.
$State$
The state assigned to the revision with the -s option of rcs(1) or ci(1).
co(1) represents the following characters in keyword values by escape sequences to keep keyword strings well-formed.
char escape sequence
tab \t
newline \n
space \040
$ \044
\ \\