Section 8.1. Introduction

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8.1. Introduction

The C shell is available on Linux as /bin/tcsh, and is completely compatible with the UNIX C shell with some enhancements of its own. A link from /bin/csh to /bin/tcsh is provided, so UNIX users can reference it as csh.

The C shell supports all of the core shell facilities described in Chapter 5, "The Linux Shells," plus the following new features:

• several ways to set and access variables

• a built-in programming language that supports conditional branching, looping, and interrupt handling

• command customization using aliases

• access to previous commands via a history mechanism

• advanced job control

• filename completion and command editing