rcsdiff - compare RCS revisions
rcsdiff [ -ksubst ] [ -q ] [ -rrev1 [ -rrev2 ] ] [ -T ] [ -V[n] ] [ -xsuffixes ] [ -zzone
] [ diff options ] file ...
rcsdiff runs diff(1) to compare two revisions of each RCS file given.
Pathnames matching an RCS suffix denote RCS files; all others denote working files. Names
are paired as explained in ci(1).
The option -q suppresses diagnostic output. Zero, one, or two revisions may be specified
with -r. The option -ksubst affects keyword substitution when extracting revisions, as
described in co(1); for example, -kk -r1.1 -r1.2 ignores differences in keyword values
when comparing revisions 1.1 and 1.2. To avoid excess output from locker name substitu-
tion, -kkvl is assumed if (1) at most one revision option is given, (2) no -k option is
given, (3) -kkv is the default keyword substitution, and (4) the working file's mode would
be produced by co -l. See co(1) for details about -T, -V, -x and -z. Otherwise, all
options of diff(1) that apply to regular files are accepted, with the same meaning as for
If both rev1 and rev2 are omitted, rcsdiff compares the latest revision on the default
branch (by default the trunk) with the contents of the corresponding working file. This
is useful for determining what you changed since the last checkin.
If rev1 is given, but rev2 is omitted, rcsdiff compares revision rev1 of the RCS file with
the contents of the corresponding working file.
If both rev1 and rev2 are given, rcsdiff compares revisions rev1 and rev2 of the RCS file.
Both rev1 and rev2 may be given numerically or symbolically.
compares the latest revision on the default branch of the RCS file to the contents of the
working file f.c.
options prepended to the argument list, separated by spaces. See ci(1) for
Exit status is 0 for no differences during any comparison, 1 for some differences, 2 for
Author: Walter F. Tichy.
Manual Page Revision: 5.5; Release Date: 1993/11/03.
Copyright (C) 1982, 1988, 1989 Walter F. Tichy.
Copyright (C) 1990, 1991, 1992, 1993 Paul Eggert.
ci(1), co(1), diff(1), ident(1), rcs(1), rcsintro(1), rcsmerge(1), rlog(1)
Walter F. Tichy, RCS--A System for Version Control, Software--Practice Experience 15, 7
(July 1985), 637-654.
GNU 1993/11/03 RCSDIFF(1)