RCSDIFF(1) USER COMMANDS RCSDIFF(1)
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
Pathnames matching an RCS suffix denote RCS files; all oth
ers denote working files. Names are paired as explained in
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 lat
est 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
If rev1 is given, but rev2 is omitted, rcsdiff compares
revision rev1 of the RCS file with the contents of the cor
responding 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 details.
Exit status is 0 for no differences during any comparison, 1
for some differences, 2 for trouble.
Author: Walter F. Tichy.
Manual Page Revision: 5.5; Release Date: 1993/11/03.
Copyright © 1982, 1988, 1989 Walter F. Tichy.
Copyright © 1990, 1991, 1992, 1993 Paul Eggert.
ci(1), co(1), diff(1), ident(1), rcs(1), rcsintro(1),
Walter F. Tichy, RCS--A System for Version Control,
Software--Practice & Experience 15, 7 (July 1985), 637-654.
GNU Last change: 1993/11/03 1