NAME
    rcsdiff - compare RCS revisions

SYNOPSIS
    rcsdiff [ -ksubst ] [ -q ] [ -rrev1 [ -rrev2 ] ] [ -T ] [ -V[n] ] [
    -xsuffixes ] [ -zzone ] [ diff options ] file ...

DESCRIPTION
    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 -T, -V, -x and -z. 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.

EXAMPLE
    The command

     rcsdiff f.c

    compares the latest revision on the default branch of the RCS file to
    the contents of the working file f.c.

ENVIRONMENT
    RCSINIT
    options prepended to the argument list, separated by spaces.
    See ci(1) for details.

DIAGNOSTICS
    Exit status is 0 for no differences during any comparison, 1 for some
    differences, 2 for trouble.

IDENTIFICATION
    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.

SEE ALSO
   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.