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RCS vs SCCS: What are the keywords?

April 26, 2017RCS SCCs vs

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RCS vs SCCS: What are the keywords?

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RCS and SCCS use different keywords that are expanded in the text. For SCCS the keyword “%I%” is replaced with the revision number if the file is checked out for reading. The RCS keywords are easier to remember, but keyword expansion is more easily customized in SCCS. In SCCS, keywords are expanded on a read-only get. If a version with expanded keywords is copied into a file that will be deltaed, the keywords will be lost and the version information in the file will not be updated. On the other hand, RCS retains the keywords when they are expanded so this is avoided.