http://www.perlmonks.org?node_id=244613

I make no apologies for this...it came to me while I was...ermmm...meditating in the Monastery bathroom :)
open (HANDLE,$door); flock (HANDLE,LOCK_EX); push; push; push; pop; my $handle = new IO::File "lavatory", "w"; $handle->flush(); flock (HANDLE,LOCK_UN); exit;
/me suddenly wonders if this crops up regularily, as it were....
update Darn - I forgot to close the door again...oh well, Larry'll close it for me:)