>>>>> ""siegfried"" == "siegfried" <[EMAIL PROTECTED]> writes:
"siegfried"> How can I have cron schedule my job daily, or even hourly, and have the perl "siegfried"> code exit if a previouse instance of the job is still running? "There can be only one!" - The Highlander Solution, as described in <http://www.stonehenge.com/merlyn/WebTechniques/col54.html>. But the short version is this: (1) make sure you have __END__ at the end of your program (so DATA is valid) (2) at the beginning of your program, insert: use Fcntl qw(LOCK_EX LOCK_NB); flock(DATA, LOCK_EX | LOCK_NB) or exit 0; And now you'll have only one instance running, ever. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 <merlyn@stonehenge.com> <URL:http://www.stonehenge.com/merlyn/> Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
