sccs(1)
NAME
sccs --- front end for the SCCS subsystem
SYNOPSIS
sccs [-r] [-d path] [-T] [-V] [--version] [-p path] [--prefix=path]
[--cssc] command [flags] [file ...]
DESCRIPTION
Sccs is a front end to the SCCS programs that helps them mesh more
cleanly with the rest of UNIX. It also includes the capability to run
"set user id" to another user to provide additional protection (but see
the section entitled BUGS).
Basically, sccs runs the command with the specified flags and args. Each
argument is normally modified to be prepended with "SCCS/s.".
Flags to be interpreted by the sccs program must be before the command
argument. Flags to be passed to the actual SCCS program must come after
the command argument. These flags are specific to the command and are
discussed in the documentation for that command.
Besides the usual SCCS commands, several "pseudo-commands" can be issued.
These are:
edit Equivalent to "get -e".
delget Perform a delta on the named files and then get new versions.
The new versions will have id keywords expanded, and will not be
editable. The -m, -p, -r, -s, and -y flags will be passed to
delta, and the -b, -c, -e, -i, -k, -l, -s, and -x flags will be
passed to get.
deledit Equivalent to delget except that the get phase includes the -e
flag. This option is useful for making a checkpoint of your
current editing phase. The same flags will be passed to delta
as described above, and all the flags listed for get above
except -e and -k are passed to edit.
create Creates an SCCS file , taking the initial contents from the file
of the same name. Any flags to admin are accepted. If the
creation is successful, the files are renamed with a comma on
the front. These should be removed when you are convinced that
the SCCS files have been created successfully.
fix Must be followed by a -r flag. This command essentially removes
the named delta, but leaves you with a copy of the delta with
the changes that were in it. It is useful for fixing small
compiler bugs, etc. Since it doesn't leave audit trails, it
should be used carefully.
clean This routine removes everything from the current directory that
can be recreated from SCCS files. It will not remove any files
being edited. If the -b flag is given, branches are ignored in
the determination of whether they are being edited; this is
dangerous if you are keeping the branches in the same directory.
unedit This is the opposite of an edit or a "get -e". It should be
used with extreme caution, since any changes you made since the
get will be irretrievably lost.
info Gives a listing of all files being edited. If the -b flag is
given, branches (i.e., SIDs with two or fewer components) are
ignored. If the -u flag is given (with an optional argument)
then only files being edited by you (or the named user) are
listed.
check Like info except that nothing is printed if nothing is being
edited, and a non-zero exit status is returned if anything is
being edited. The intent is to have this included in an install
entry in a makefile to insure that everything is included into
the SCCS file before a version is installed.
tell Gives a newline-separated list of the files being edited on the
standard output. Takes the -b and -u flags like info and check.
diffs Gives a diff listing between the current version of the
program(s) you have out for editing and the versions in SCCS
format. The -r, -c, -i, -x, and -t flags are passed to
get; the -l, -s, -e, -f, -h, -u, -n, -w, and -b options are
passed to diff. The -a, -B, -d, -H, -p, -q, -s, -v, and -y
options are passed to diff but these options are (usually)
specific to GNU diff, and so may not be supported on systems
other than GNU. The -C flag is passed to diff as -c.
print This command prints out verbose information about the named
files.
Certain commands (such as admin) cannot be run "set user id" by all
users, since this would allow anyone to change the authorizations. These
commands are always run as the real user.
--cssc Returns a zero exit value (for the GNU version only). No
other operation is performed. This flag is used by the
test suite to determine if it needs to use the --prefix
flag in order to find the correct subprograms (non-GNU
versions of sccs have the full pathnames for the
subprograms hard-coded). In this way, the CSSC test suite
can be compiled ready for installation in a particular
directory, but the test suite can still be run before the
suite has been installed in its final position. This
option is supported only by the GNU version of sccs.
--prefix=foo Uses foo as the prefix for SCCS sub-commands. The default
prefix is compiled into the program and is usually
"/usr/sccs". You can discover the prefix setting with the
-V flag. This prefix is used without a final slash being
appended, so values like "/usr/local/bin/cssc-" can be
used. This option is disallowed if the program is
installed setuid, and it is supported only by the GNU
version of sccs. This option is not equivalent to the -p
flag.
--version Show version information; synonymous with the -V flag.
-r Runs sccs as the real user rather than as whatever
effective user sccs is "set user id" to.
-d Specifies a root directory for the SCCS files. The default
is the current directory. If environment variable
PROJECTDIR is set, it will be used to determine the -d
flag.
-p Defines the pathname of the directory in which the SCCS
files will be found; "SCCS" is the default. The -p flag
differs from the -d flag in that the -d argument is
prepended to the entire pathname and the -p argument is
inserted before the final component of the pathname. For
example, "sccs -d/x -py get a/b" will convert to "get
/x/a/y/s.b". The intent here is to create aliases such as
"alias syssccs sccs -d/usr/src" which will be used as
"syssccs get cmd/who.c". Please note that the -p flag is
(very) different in purpose from the --prefix option.
-T This flag causes the program to emit a debugging trace on
stdout. This flag may be disabled at compile time.
-V Shows the version information for the sccs program, and the
subcommand prefix being used. This option is supported
only by the GNU version of sccs.
EXAMPLES
To get a file for editing, edit it, and produce a new delta:
sccs get -e file.c
ex file.c
sccs delta file.c
To get a file from another directory:
sccs -p/usr/src/sccs/s. get cc.c
or
sccs get /usr/src/sccs/s.cc.c
To make a delta of a large number of files in the current directory:
sccs delta *.c
To get a list of files being edited that are not on branches:
sccs info -b
To delta everything being edited by you:
sccs delta `sccs tell -u`
In a makefile, to get source files from an SCCS file if it does not
already exist:
SRCS = <list of source files>
$(SRCS):
sccs get $(REL) $@
MAINTAINER
This version of sccs is maintained by James Youngman, <jay@gnu.org>.
ENVIRONMENT
PROJECTDIR
The PROJECTDIR environment variable is checked by the -d
flag. If it begins with a slash, it is taken directly;
otherwise, the home directory of a user of that name is
examined for a subdirectory "src" or "source". If such a
directory is found, it is used.
DIAGNOSTICS
There are many error messages, mostly brief but fairly obvious. If all
goes acording to plan, the program's exit status is zero. Otherwise, it
will be one of the following values:-
0 No error; everything proceeded according to plan.
64 Command line usage error
69 Could not exec program
70 Internal software error. This should not happen.
71 System error (e.g., can't fork)
75 Temporary failure; retry later. This error is returned when the
system runs out of memory.
77 Permission denied. This error occurs when the program has been
installed setuid, but SCCSDIR was not configured in at compile
time. This can also happen if something goes wrong when the
program tries to drop its setuid or setgid privileges. When a
program exits due to a fatal signal, the shell usually adds 128 to
the signal number and uses that as the return value. Some systems
also produce values in this range if there was a problem with the
dynamic linker.
SEE ALSO
what(1), sccs-admin(1), sccs-cdc(1), sccs-comb(1), sccs-delta(1),
sccs-get(1), sccs-help(1), sccs-prs(1), sccs-prt(1), sccs-rmchg(1),
sccs-rmdel(1), sccs-sact(1), sccsdiff(1), sccs-unget(1), sccs-val(1),
make(1), rcsintro(1), cvs(1), sccsfile(5).
Eric Allman, An Introduction to the Source Code Control System.
James Youngman, CSSC: Compatibly Stupid Source Control.
COPYING
Copyright 1998
Free Software Foundation, Inc. All rights reserved.
Copyright 1983, 1990, 1993
The Regents of the University of California. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this
software must display the following acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
HISTORY
The sccs command appeared in 4.3BSD.
This version of sccs has been slightly modified to support GNU Autoconf,
and several new options (those beginning with two dashes and also -V) and
to make it somewhat more portable. The program otherwise remains largely
unchanged.
BUGS
It should be able to take directory arguments on pseudo-commands like the
SCCS commands do.
Though this program is mostly derived from the original BSD code, the
subprograms accompanying it in the CSSC suite (admin, get, delta and so
on) are not the original AT&T code. Please do not count on these
programs being secure.
Other known bugs are listed in the file BUGS, which accompanies GNU CSSC.
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