sccs(1p) — Linux manual page


SCCS(1P)                POSIX Programmer's Manual               SCCS(1P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The
       Linux implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior),
       or the interface may not be implemented on Linux.

NAME         top

       sccs — front end for the SCCS subsystem (DEVELOPMENT)

SYNOPSIS         top

       sccs [-r] [-d path] [-p path] command [options...] [operands...]

DESCRIPTION         top

       The sccs utility is a front end to the SCCS programs. It also
       includes the capability to run set-user-id to another user to
       provide additional protection.

       The sccs utility shall invoke the specified command with the
       specified options and operands.  By default, each of the operands
       shall be modified by prefixing it with the string "SCCS/s.".

       The command can be the name of one of the SCCS utilities in this
       volume of POSIX.1‐2017 (admin, delta, get, prs, rmdel, sact,
       unget, val, or what) or one of the pseudo-utilities listed in the

OPTIONS         top

       The sccs utility shall conform to the Base Definitions volume of
       POSIX.1‐2017, Section 12.2, Utility Syntax Guidelines, except
       that options operands are actually options to be passed to the
       utility named by command.  When the portion of the command:

           command [options ... ] [operands ... ]

       is considered, all of the pseudo-utilities used as command shall
       support the Utility Syntax Guidelines. Any of the other SCCS
       utilities that can be invoked in this manner support the
       Guidelines to the extent indicated by their individual OPTIONS

       The following options shall be supported preceding the command

       -d path   A pathname of a directory to be used as a root
                 directory for the SCCS files. The default shall be the
                 current directory. The -d option shall take precedence
                 over the PROJECTDIR variable. See -p.

       -p path   A pathname of a directory in which the SCCS files are
                 located. The default shall be the SCCS directory.

                 The -p option differs from the -d option in that the -d
                 option-argument shall be prefixed to the entire
                 pathname and the -p option-argument shall be inserted
                 before the final component of the pathname. For

                     sccs -d /x -p y get a/b

                 converts to:

                     get /x/a/y/s.b

                 This allows the creation of aliases such as:

                     alias syssccs="sccs -d /usr/src"

                 which is used as:

                     syssccs get cmd/who.c

       -r        Invoke command with the real user ID of the process,
                 not any effective user ID that the sccs utility is set
                 to. Certain commands (admin, check, clean, diffs, info,
                 rmdel, and tell) 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.

OPERANDS         top

       The following operands shall be supported:

       command   An SCCS utility name or the name of one of the pseudo-
                 utilities listed in the EXTENDED DESCRIPTION section.

       options   An option or option-argument to be passed to command.

       operands  An operand to be passed to command.

STDIN         top

       See the utility description for the specified command.

INPUT FILES         top

       See the utility description for the specified command.


       The following environment variables shall affect the execution of

       LANG      Provide a default value for the internationalization
                 variables that are unset or null. (See the Base
                 Definitions volume of POSIX.1‐2017, Section 8.2,
                 Internationalization Variables for the precedence of
                 internationalization variables used to determine the
                 values of locale categories.)

       LC_ALL    If set to a non-empty string value, override the values
                 of all the other internationalization variables.

       LC_CTYPE  Determine the locale for the interpretation of
                 sequences of bytes of text data as characters (for
                 example, single-byte as opposed to multi-byte
                 characters in arguments and input files).

                 Determine the locale that should be used to affect the
                 format and contents of diagnostic messages written to
                 standard error.

       NLSPATH   Determine the location of message catalogs for the
                 processing of LC_MESSAGES.

                 Provide a default value for the -d path option. If the
                 value of PROJECTDIR begins with a <slash>, it shall be
                 considered an absolute pathname; otherwise, the value
                 of PROJECTDIR is treated as a user name and that user's
                 initial working directory shall be examined for a
                 subdirectory src or source.  If such a directory is
                 found, it shall be used. Otherwise, the value shall be
                 used as a relative pathname.

       Additional environment variable effects may be found in the
       utility description for the specified command.



STDOUT         top

       See the utility description for the specified command.

STDERR         top

       See the utility description for the specified command.

OUTPUT FILES         top

       See the utility description for the specified command.


       The following pseudo-utilities shall be supported as command
       operands. All options referred to in the following list are
       values given in the options operands following command.

       check   Equivalent to info, except that nothing shall be printed
               if nothing is being edited, and a non-zero exit status
               shall be returned if anything is being edited. The intent
               is to have this included in an ``install'' entry in a
               makefile to ensure that everything is included into the
               SCCS file before a version is installed.

       clean   Remove everything from the current directory that can be
               recreated from SCCS files, but do not remove any files
               being edited. If the -b option is given, branches shall
               be ignored in the determination of whether they are being
               edited; this is dangerous if branches are kept in the
               same directory.

       create  Create an SCCS file, taking the initial contents from the
               file of the same name. Any options to admin are accepted.
               If the creation is successful, the original files shall
               be renamed by prefixing the basenames with a comma. These
               renamed files should be removed after it has been
               verified that the SCCS files have been created

       delget  Perform a delta on the named files and then get new
               versions. The new versions shall have ID keywords
               expanded and shall not be editable. Any -m, -p, -r, -s,
               and -y options shall be passed to delta, and any -b, -c,
               -e, -i, -k, -l, -s, and -x options shall be passed to

       deledit Equivalent to delget, except that the get phase shall
               include the -e option. This option is useful for making a
               checkpoint of the current editing phase. The same options
               shall be passed to delta as described above, and all the
               options listed for get above except -e shall be passed to

       diffs   Write a difference listing between the current version of
               the files checked out for editing and the versions in
               SCCS format. Any -r, -c, -i, -x, and -t options shall be
               passed to get; any -l, -s, -e, -f, -h, and -b options
               shall be passed to diff.  A -C option shall be passed to
               diff as -c.

       edit    Equivalent to get -e.

       fix     Remove the named delta, but leave a copy of the delta
               with the changes that were in it. It is useful for fixing
               small compiler bugs, and so on. The application shall
               ensure that it is followed by a -r SID option. Since fix
               does not leave audit trails, it should be used carefully.

       info    Write a listing of all files being edited. If the -b
               option is given, branches (that is, SIDs with two or
               fewer components) shall be ignored. If a -u user option
               is given, then only files being edited by the named user
               shall be listed. A -U option shall be equivalent to
               -u<current user>.

       print   Write out verbose information about the named files,
               equivalent to sccs prs.

       tell    Write a <newline>-separated list of the files being
               edited to standard output. Takes the -b, -u, and -U
               options like info and check.

       unedit  This is the opposite of an edit or a get -e.  It should
               be used with caution, since any changes made since the
               get are lost.

EXIT STATUS         top

       The following exit values shall be returned:

        0    Successful completion.

       >0    An error occurred.



       The following sections are informative.


       Many of the SCCS utilities take directory names as operands as
       well as specific filenames. The pseudo-utilities supported by
       sccs are not described as having this capability, but are not
       prohibited from doing so.

EXAMPLES         top

        1. 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

        2. To get a file from another directory:

               sccs -p /usr/src/sccs/s. get cc.c


               sccs get /usr/src/sccs/

        3. To make a delta of a large number of files in the current

               sccs delta *.c

        4. To get a list of files being edited that are not on branches:

               sccs info -b

        5. To delta everything being edited by the current user:

               sccs delta $(sccs tell -U)

        6. In a makefile, to get source files from an SCCS file if it
           does not already exist:

               SRCS = <list of source files>
                   sccs get $(REL) $@

RATIONALE         top

       sccs and its associated utilities are part of the XSI Development
       Utilities option within the XSI option.

       SCCS is an abbreviation for Source Code Control System. It is a
       maintenance and enhancement tracking tool. When a file is put
       under SCCS, the source code control system maintains the file
       and, when changes are made, identifies and stores them in the
       file with the original source code and/or documentation. As other
       changes are made, they too are identified and retained in the

       Retrieval of the original and any set of changes is possible. Any
       version of the file as it develops can be reconstructed for
       inspection or additional modification. History data can be stored
       with each version, documenting why the changes were made, who
       made them, and when they were made.



SEE ALSO         top

       admin(1p), delta(1p), get(1p), make(1p), prs(1p), rmdel(1p),
       sact(1p), unget(1p), val(1p), what(1p)

       The Base Definitions volume of POSIX.1‐2017, Chapter 8,
       Environment Variables, Section 12.2, Utility Syntax Guidelines

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any
       discrepancy between this version and the original IEEE and The
       Open Group Standard, the original IEEE and The Open Group
       Standard is the referee document. The original Standard can be
       obtained online at .

       Any typographical or formatting errors that appear in this page
       are most likely to have been introduced during the conversion of
       the source files to man page format. To report such errors, see .

IEEE/The Open Group               2017                          SCCS(1P)

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