I apologize if this is sent twice. I sent it once a couple of hours ago and did not see it appear so I am sending it again.
I have a cron job running perl and it is taking a very long time -- sometimes over 24 hours. How can I have cron schedule my job daily, or even hourly, and have the perl code exit if a previouse instance of the job is still running? Some have suggested creating a file in /tmp and checking it before proceding. But what if a cron job exits prematurely, perhaps because of a division by zero, and does not delete the /tmp file? Others have suggested checking /proc (which seems to exist in cygwin :)) for my pid and send a semaphore or a SIGUSR1 to determine if it's not hung. Will this work in cygwin? Thanks, Siegfried -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
