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Return is a bash builtin function that causes to update the exit status specified by n.

Return is intended to be used only for signaling errors, not for returning the results of function.

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Syntax

return [n]

If used:

• inside a function. Return value specified by n. If n is omitted, the return status is that of the last command executed in the function body.
• outside a function,
  • during execution of a script by the . (source) command, it causes the shell to stop executing that script and return either n or the exit status of the last command executed within the script as the exit status of the script.
  • not during execution of a script by . (source), the return status is false.

Any command associated with the RETURN trap is executed before execution resumes after the function or script.