


RCSDIFF(1)	    Printed December 19, 1991	       RCSDIFF(1)



NAME
     rcsdiff - compare RCS revisions

SYNOPSIS
     rcsdiff [ -ksubst ] [ -q ]	[ -rrev1 [ -rrev2 ] ] [	-Vn ] [
     -xsuffixes	] [ 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 -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.

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.




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RCSDIFF(1)	    Printed December 19, 1991	       RCSDIFF(1)



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.
     Revision Number: 5.3; Release Date: 1991/04/21.
     Copyright O 1982, 1988, 1989 by Walter F. Tichy.
     Copyright O 1990, 1991 by 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.



































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