Re: Create zombies on purpose

Yes, fork processes and don't wait on them in the parent.

#!/usr/bin/perl
fork or exit for 1..100;
<>;
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Comment on Re: Create zombies on purpose Download Code

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Re^2: Create zombies on purpose by happy.barney (Friar) on Mar 17, 2011 at 15:13 UTC
note: forked processes should exit and parent cannot. `perl -e 'fork \|\| exit for 1 .. shift; <>' 5`	[reply] [d/l]
Re^3: Create zombies on purpose by eddor1614 (Beadle) on Mar 17, 2011 at 15:30 UTC
Of course, I was doing it right, but when perl exits, the Zombies disappears. So I was wrong. Thank you! Any way of leaving the zombies after the parent exits?	[reply]
Re^4: Create zombies on purpose by happy.barney (Friar) on Mar 17, 2011 at 15:37 UTC
Simplified: if process exits, all its children are turned to be children of process 1 (init) and that it will wait. You can for example replace `<>` with `kill STOP => $$` but than it will be good to have possibility to terminate that process.	[reply] [d/l] [select]
Re^4: Create zombies on purpose by cdarke (Prior) on Mar 17, 2011 at 16:32 UTC
No, because they are not zombies then, they are orphans. Anyway, a zombie is a process that has finished - it is only there to allow the parent to pick-up its exit code, there is almost nothing left of the original process (if memory serves me right, a zombie is only a couple of pages on Linux).	[reply]