Bash Features

This chapter describes features unique to Bash.

Invoking Bash	Command line options that you can give to Bash.
Bash Startup Files	When and how Bash executes scripts.
Interactive Shells	What an interactive shell is.
Bash Conditional Expressions	Primitives used in composing expressions for the `test` builtin.
Shell Arithmetic	Arithmetic on shell variables.
Aliases	Substituting one command for another.
Arrays	Array Variables.
The Directory Stack	History of visited directories.
Controlling the Prompt	Customizing the various prompt strings.
The Restricted Shell	A more controlled mode of shell execution.
Bash POSIX Mode	Making Bash behave more closely to what the POSIX standard specifies.
Shell Compatibility Mode	How Bash supports behavior that was present in earlier versions and has changed.