From: Nate Murray <jashmenn@...>
Date: 2006-11-21T05:10:07+09:00
Subject: fork, trap and exec. Pickaxe typo?

Hey All, I got this code straight from the PickAxe:

trap("CLD") {
  pid = Process.wait
  puts "Child pid #{pid}: terminated"
  exit
}


exec("echo 'hello world'") if fork == nil

But it doesnt word!
The CLD trap'ped call never executes.


Another question... If I perform the exec 4 times the trap call back
should be called four times, right?

So this code:

trap("CLD") {
  pid = Process.wait
  puts "Child pid #{pid}: terminated"
  exit
}

1.upto(4) do
  exec("echo \"hello $HOSTNAME #{Process.pid}\n\" ; sleep 5") if
fork.nil?
end

Should call trap("CLD") four times, right?

Thanks for your help in advance.