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File name : return

Content :return [ n ] Causes a shell function or `.' script to return to the invoking script with the return status specified by an arithmetic expres- sion n. If n is omitted, the return status is that of the last command executed. If return was executed from a trap in a TRAPNAL function, the effect is different for zero and non-zero return status. With zero status (or after an implicit return at the end of the trap), the shell will return to whatever it was previously pro- cessing; with a non-zero status, the shell will behave as inter- rupted except that the return status of the trap is retained. Note that the numeric value of the signal which caused the trap is passed as the first argument, so the statement `return $((128+$1))' will return the same status as if the signal had not been trapped.

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