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    Part I: Commands and Shells > tcsh: An Extended C Shell

    Chapter 5. tcsh: An Extended C Shell

    This chapter describes tcsh, an enhanced version of the C shell. On many systems, tcsh is also the regular C shell (/bin/csh); in that case, the tcsh features described in this chapter work even when you run csh. The C shell was so named because many of its programming constructs and symbols resemble those of the C programming language. The following topics are presented:

    • Overview of features

    • Invoking the shell

    • Syntax

    • Variables

    • Expressions

    • Command history

    • Command-line manipulation

    • Job control

    • Built-in commands


      

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