Says tye:

How does a child wait for a parent to exit? (use flock as an IPC mechanism)
That's nice. Thanks for the idea.

Here's an alternative mechanism. I think this might be more commonly used:

#!/usr/bin/perl

pipe R, W or die;
die unless defined my $pid = fork;
if ($pid) {
  # parent
  close R;
  print "parent: I'm going to do some work now\n";
  for (1 .. rand 12) {
    print "Parent is working...\n";
    sleep 1;
  }
  print "parent: exiting\n";
} else {  # child
  close W;
  print "child: waiting for parent to exit\n";
  <R>;
  print "child: parent exited; exiting\n";
}

[download]
I used this technique extensively in my obfuscated contest entry.

In reply to Re: Temporary files and cleaning up after an interruption by Dominus
in thread Temporary files and cleaning up after an interruption by mischief

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