11.1SjwiseCVS is a version control system, which allows you to keep old versions 21.1Sjwiseof files (usually source code), keep a log of who, when, and why changes 31.1Sjwiseoccurred, etc., like RCS or SCCS. Unlike the simpler systems, CVS 41.1Sjwisedoes not just operate on one file at a time or one directory at a time, 51.1Sjwisebut operates on hierarchical collections of directories consisting of 61.1Sjwiseversion controlled files. CVS helps to manage releases and to control 71.1Sjwisethe concurrent editing of source files among multiple authors. CVS 81.1Sjwiseallows triggers to enable/log/control various operations and works well 91.1Sjwiseover a wide area network (see man pages). 10