Compare rcs revisions
rcsdiff [ -ksubst ] [ -q ] [ -rrev1 [ -rrev2 ] ] [ -T ] [ -V[n] ] [ -xsuffixes ] [ -zzone ] [ diff options ] file .\|.\|.
rcsdiff runs diff(1) to compare two revisions of each \*o given.
Filenames matching an \*r suffix denote \*os; 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 \*o with the contents of the corresponding working file.
If both rev1 and rev2 are given, rcsdiff compares revisions rev1 and rev2 of the \*o.
Both rev1 and rev2 may be given numerically or symbolically.
The command
rcsdiff f.c
compares the latest revision on the default branch of the \*o to the contents of the working file f.c.
\s-1RCSINIT\s0
Options prepended to the argument list, separated by spaces. A backslash escapes spaces within an option. The \s-1RCSINIT\s0 options are prepended to the argument lists of most \*r commands. Useful \s-1RCSINIT\s0 options include -q, -V, -x, and -z.
\s-1RCS_MEM_LIMIT\s0
An integer lim, measured in kilobytes, specifying the threshold under which commands will try to use memory-based operations for processing the \*o. (For \*os of size lim kilobytes or greater, RCS will use the slower standard input/output routines.) Default value is 256.
\s-1TMPDIR\s0
Name of the temporary directory. If not set, the environment variables \s-1TMP\s0 and \s-1TEMP\s0 are inspected instead and the first value found is taken; if none of them are set, a host-dependent default is used, typically /tmp.
Exit status is 0 for no differences during any comparison, 1 for some differences, 2 for trouble.
Author: Walter F. Tichy.
Manual Page Revision: \*(Rv; Release Date: \*(Dt.
Copyright © 2010-2014 Thien-Thi Nguyen.
Copyright © \*(EY Paul Eggert.
Copyright © 1982, 1988, 1989 Walter F. Tichy.
ci(1), co(1), diff(1), ident(1), rcs(1), rcsmerge(1), rlog(1).
Walter F. Tichy, \*r\*-A System for Version Control, Software\*-Practice & Experience 15, 7 (July 1985), 637-654.
The full documentation for \*r is maintained as a Texinfo manual. If the info(1) and \*r programs are properly installed at your site, the command
info rcs
should give you access to the complete manual. Additionally, the \*r homepage:
http://www.gnu.org/software/rcs/
has news and links to the latest release, development site, etc.