Bash Reference Manual. Node: Executing Commands

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3.7: Executing Commands

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

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

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

  • Environment The environment given to a command.

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

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

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