=over =item exit EXPR X X X =item exit Evaluates EXPR and exits immediately with that value. Example: $ans = ; exit 0 if $ans =~ /^[Xx]/; See also C. If EXPR is omitted, exits with C status. The only universally recognized values for EXPR are C for success and C 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 a I incoming-mail filter will cause the mailer to return the item undelivered, but that's not true everywhere. Don't use C to abort a subroutine if there's any chance that someone might want to trap whatever error happened. Use C instead, which can be trapped by an C. The exit() function does not always exit immediately. It calls any defined C routines first, but these C routines may not themselves abort the exit. Likewise any object destructors that need to be called are called before the real exit. C routines and destructors can change the exit status by modifying C. If this is a problem, you can call C<:_exit> to avoid END and destructor processing. See L for details. Portability issues: L. =back