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
      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 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: 1.3; Release Date: 1996/01/31.
      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.