Bash Features (Bash Reference Manual)

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6 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.