## 14.6. Overview of RCS Commands

The three most important RCS commands are:

ci

  Check in revisions (put a file under RCS control).

co

  Check out revisions.

rcs

  Set up or change attributes of RCS files.

Two additional commands provide information about RCS files:

ident

  Extract keyword values from an RCS file.

rlog

  Display a summary (log) about the revisions in an RCS file.

You can compare RCS files with these commands:

rcsdiff

  Report differences between revisions.

rcsmerge

  Incorporate changes from two RCS files into a third RCS file.

The following command helps with configuration management:

rcsclean

  Remove working files that have not been changed.

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