Source Code Control System (SCCS) was the first .

SCCS was included in several Unix distributions from AT&T, including Programmer s Workbench UNIX, UNIX System III, and UNIX System V, as well as other Unix versions derived from these releases. The SCCS command set is now part of the Single UNIX Specification.

SCCS was the dominant version control system until the release of the Revision Control System. Today, SCCS is generally considered obsolete. However, its file format is still used internally by a few other revision control programs, including BitKeeper and TeamWare. The SCCS file format uses a storage technique called interleaved deltas. This storage technique is now considered by many revision control system developers as key to some advanced Merge (revision control) techniques, such as the Precise Codeville ( pcdv ) merge.

=References=

*M. J. Rochkind: [http://basepath.com/aup/talks/SCCS-Slideshow.pdf The Source Code Control System]. In IEEE Transactions on Software Engineering SE-1:4 (Dec. 1975), pages 364370.

*Greg Hudson: [http://web.mit.edu/ghudson/thoughts/file-versioning Notes on keeping version histories of files]. Unpublished personal notice.

*[http://ximbiot.com/cvs/wiki/index.phptitle=SCCS Cyclic SCCS Page]

=External Links=

*[http://www.csclub.uwaterloo.ca/~rridge/mysc/index.html MySC], an SCCS implementation from [http://www.csclub.uwaterloo.ca/~rridge Ross Ridge].