http://qs1969.pair.com?node_id=744

Current Perl documentation can be found at perldoc.perl.org.

Here is our local, out-dated (pre-5.6) version:

Use the alarm() function, probably in conjunction with a signal handler, as documented Signals and chapter 6 of the Camel. You may instead use the more flexible Sys::AlarmCall module available from CPAN.