RCSDIFF(1) OpenBSD Reference Manual RCSDIFF(1)NAMErcsdiff - compare RCS revisions
SYNOPSISrcsdiff [-cnquV] [-kmode] [-rrev] [-xsuffixes] [-ztz] [diff_options]
file ...
DESCRIPTION
The rcsdiff program is used to compare revisions of RCS files, in much
the same way as the diff(1) utility. Differences between two specific
revisions can be requested, as well as differences between the current
working file and the latest revision of the default branch.
It is not possible to display differences between entire directories, or
differences between more than two files. All diffs produced are in the
standard diff format, unless the -u option is specified, which produces
unified diffs.
rcsdiff also supports keyword substitution - see the rcs(1) man page for
more information.
The following options are supported:
-c Produces a diff with three lines of context. See diff(1) for
more information.
-kmode Specify the keyword substitution mode.
-n Produces a diff in the same format that is used in the RCS files.
-q Be quiet about reporting.
-rrev Produces a diff with respect to revision rev. This option should
be specified twice to generate a diff between two specific
revisions. If only one revision is specified, diffing is done
between that revision and the current working file.
-u Produces a unified diff with three lines of context. See diff(1)
for more information.
-V Print RCS's version number.
-xsuffixes
Specifies the suffixes for RCS files. Suffixes should be
separated by the `/' character.
-ztz Specify the date output format.
diff_options
Most of the options documented in diff(1) may also be specified.
ENVIRONMENT
RCSINIT If set, this variable should contain a list of space-delimited
options that are prepended to the argument list.
TMPDIR When set, this variable specifies the directory where temporary
files are to be created. The default is set to /tmp.
EXIT STATUS
The rcsdiff utility exits with one of the following values:
0 No differences were found.
1 Differences were found.
2 An error occurred.
EXAMPLES
Compare the latest revision of the default branch with the content of
working file foo.c:
$ rcsdiff foo.c
Compare revision 1.7 and 1.8 of file foo.c and ignore differences in
keyword values:
$ rcsdiff-kk -r1.7 -r1.8 foo.c
SEE ALSOci(1), co(1), diff(1), ident(1), rcs(1), rcsclean(1), rcsmerge(1),
rlog(1)STANDARDS
The flag [-T] has no effect and is provided for compatibility only.
OpenBSD 4.9 September 3, 2010 OpenBSD 4.9
