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