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Perl Monk, Perl Meditation  Re: Most useless function.  by
Moriarty (Abbot) on Feb 17, 2006 at 01:53 UTC
( #530839=note: print w/ replies, xml ) Need Help??  in reply to
Most useless function.  I have heard that ispoweron() isn't all
that useless. It's used by some systems to unmount filesystems,
park drive heads and other useful stuff before the capacitors
are drained after the power has been turned off.  Comment on Re:
Most useless function. Re^2: Most useless function. by jdporter
(Canon) on Feb 17, 2006 at 14:48 UTC      I really, really hope
that story is apocryphal and wrong.     What, you're going to
poll that status until it goes false?     Things like this
should be event driven.      We're building the house of the
future together.       AFAIK, there's also a signal that gets
sent in event of a power fluctuation. From there, you can use
"ispoweron()" to tell the difference between a momentary power
blip, and a real outage condition.