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Bash Reference Manual

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3.7 Executing Commands

3.7.1 Simple Command Expansion  How Bash expands simple commands before executing them.

3.7.2 Command Search and Execution  How Bash finds commands and runs them.

3.7.3 Command Execution Environment  The environment in which Bash executes commands that are not shell builtins.

3.7.4 Environment  The environment given to a command.

3.7.5 Exit Status  The status returned by commands and how Bash interprets it.

3.7.6 Signals  What happens when Bash or a command it runs receives a signal.


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