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C Shell

C Shell, sometimes called csh or the C Command Language, is a Unix shell that combines features of both the C programming language and its predecessor, the Bourne shell. The syntax and usage of csh are similar to those of C but include some additional interactive conveniences such as aliases and history substitution. It was developed by Bill Joy at Berkeley for the BSD operating systems in the late 1970s. Despite being one of the first shells to introduce command-line editing capabilities in addition to tab completion for file names, it has largely been superseded by more powerful shells like bash (Bourne-again Shell) which itself is based on sh (the Bourne Shell).

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