Evaluates EXPR and exits immediately with that value. Example:
$ans = <STDIN>;exit 0 if $ans =~ /^[Xx]/;See alsodie. If EXPR is omitted, exits with0 status. The only universally recognized values for EXPR are0 for success and1 for error; other values are subject to interpretation depending on the environment in which the Perl program is running. For example, exiting 69 (EX_UNAVAILABLE) from asendmail incoming-mail filter will cause the mailer to return the item undelivered, but that's not true everywhere.
Don't useexit to abort a subroutine if there's any chance that someone might want to trap whatever error happened. Usedie instead, which can be trapped by aneval.
The exit() function does not always exit immediately. It calls any definedEND routines first, but theseEND routines may not themselves abort the exit. Likewise any object destructors that need to be called are called before the real exit.END routines and destructors can change the exit status by modifying$?. If this is a problem, you can callPOSIX::_exit($status) to avoid END and destructor processing. Seeperlmod for details.
Portability issues:"exit" in perlport.
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