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Bourne Shell Style Features

Bash is an acronym for Bourne Again SHell. The Bourne shell is the traditional Unix shell originally written by Stephen Bourne. All of the Bourne shell builtin commands are available in Bash, and the rules for evaluation and quoting are taken from the Posix 1003.2 specification for the `standard' Unix shell.

This section briefly summarizes things which Bash inherits from the Bourne shell: shell control structures, builtins, variables, and other features. It also lists the significant differences between Bash and the Bourne Shell.

Looping Constructs: Shell commands for iterative action.
Conditional Constructs: Shell commands for conditional execution.
Shell Functions: Grouping commands by name.
Bourne Shell Builtins: Builtin commands inherited from the Bourne Shell.
Bourne Shell Variables: Variables which Bash uses in the same way as the Bourne Shell.
Other Bourne Shell Features: Addtional aspects of Bash which behave in the same way as the Bourne Shell.

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