I have a daemon that closes STDOUT: 
fork ...etc
close(STDOUT); ...etc
setsid();

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Later on, my daemon wants to fork itself to do some background work, and have the worker process notify the parent via a "Safe Pipe Open" , so I have something like: 
$kidpid=open($fh,"-|"); #err handling omitted
if ($kidpid) {
  while(<$fh>) {print;}
  close($fh); # implicit waitpid
} else {
  print "hello parent\n";
  exit;
}

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but i never see the output in the parent b/c the child inherits a closed STDOUT. What is the right way to both close STDOUT for the parent's daemonization sake, but still use the nice open($fh,"-|") to allow the code to talk?

In reply to right way to reopen STDOUT in a child by fng

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