I'm following the recipe shown in http://perldoc.perl.org/perlipc.html#Handling-the-SIGHUP-Signal-in-Daemons to make my daemon process restart itself. It works fine on the first restart, but after that kill -1 pid seems to be ignored: print statements in the $SIG{HUP} subroutine aren't executed. However, other signals continue to get through to their respective handlers.

The problem even occurs in the sample program shown in the perlipc documentation.

It's such simple concept - I would have thought the exec() would pretty thoroughly clean the slate. Any idea why the HUP signal handler wouldn't "take" the second time?

In reply to Using SIGHUP to restart a daemon by ibm1620

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