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Re^3: print on reboot or process shutdown

by psini (Deacon)
on Jul 29, 2008 at 21:30 UTC ( #700927=note: print w/replies, xml ) Need Help??


in reply to Re^2: print on reboot or process shutdown
in thread print on reboot or process shutdown

You can use a signal handler to cacth SIGTERM

$SIG{TERM}=sub { #do something here };

But that cannot trap a SIGKILL so if you or your system make a kill -9, it will not be intercepted. And, no, AFAIK there is no way to intercept a SIGKILL because it should be the last resort to kill a not responding process.

Rule One: "Do not act incautiously when confronting a little bald wrinkly smiling man."

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choroba's discovered two instances of a weird animal in the code at work: \@$var
[Eily]: hum, tied scalar, generates a new array when derefed ? :D
[Corion]: choroba: Ah, when doing a shallow copy, I prefer [ @$var ] - I think \@$var might return the same reference instead of a reference to a fresh copy
[Corion]: perl -wle "my $ar = [1,2,3]; my $br=\@$ar; print qq($ar / $br)" confirms this to me
[karlgoethebier]: "discovered" this to sum an array: perl -E 'say scalar map {1 .. $_} (1..3);'

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