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CentOS 7.0 - man page for rcsdiff (centos section 1)

RCSDIFF(1)									       RCSDIFF(1)

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.

       Filenames 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	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
       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.  A backslash escapes
	      spaces within an option.	The RCSINIT options are prepended to the  argument  lists
	      of most RCS commands.  Useful RCSINIT options include -q, -V, -x, and -z.

       RCS_MEM_LIMIT
	      An  integer  lim,  measured in kilobytes, specifying the threshold under which com-
	      mands will try to use memory-based operations for processing the	RCS  file.   (For
	      RCS  files  of  size  lim  kilobytes  or	greater, RCS will use the slower standard
	      input/output routines.)  Default value is 256.

       TMPDIR Name of the temporary directory.	If not set, the  environment  variables  TMP  and
	      TEMP  are inspected instead and the first value found is taken; if none of them are
	      set, a host-dependent default is used, typically /tmp.

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: 5.9.0; Release Date: 2014-06-10.
       Copyright (C) 2010-2013 Thien-Thi Nguyen.
       Copyright (C) 1990, 1991, 1992, 1993 Paul Eggert.
       Copyright (C) 1982, 1988, 1989 Walter F. Tichy.

SEE ALSO
       ci(1), co(1), diff(1), ident(1), rcs(1), rcsmerge(1), rlog(1).

       Walter  F. Tichy, RCS--A System for Version Control, Software--Practice & Experience 15, 7
       (July 1985), 637-654.

       The full documentation for RCS is maintained as a Texinfo manual.  If the info(1) and  RCS
       programs are properly installed at your site, the command

	      info rcs

       should give you access to the complete manual.  Additionally, the RCS homepage:

	      http://www.gnu.org/software/rcs/

       has news and links to the latest release, development site, etc.

GNU RCS 5.9.0				    2014-06-10				       RCSDIFF(1)


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