rcsdiff man page on 4.4BSD
rcsdiff - compare RCS revisions
rcsdiff [ -ksubst ] [ -q ] [ -rrev1 [ -rrev2 ] ] [ -Vn ] [ -xsuffixes ]
[ 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 revi‐
sions 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 substitution, -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 -V and -x. Otherwise, all options
of diff(1) that apply to regular files are accepted, with the same
meaning as for diff.
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 details.
Exit status is 0 for no differences during any comparison, 1 for some
differences, 2 for trouble.
Author: Walter F. Tichy.
Revision Number: 5.3; Release Date: 1991/04/21.
Copyright © 1982, 1988, 1989 by Walter F. Tichy.
Copyright © 1990, 1991 by Paul Eggert.
ci(1), co(1), diff(1), ident(1), rcs(1), rcsintro(1), rcsmerge(1),
Walter F. Tichy, RCS--A System for Version Control, Software--Practice
& Experience 15, 7 (July 1985), 637-654.
GNU 1991/04/21 RCSDIFF(1)
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