Murcia,
If you look in perlvar, you will see that $? is the status returned by the last closed pipe. The ! is a way to booleanize it. If it has a non-zero value, it becomes 0 and if it had a 0 value, it becomes 1.

Cheers - L~R

In reply to Re^3: Parallel::ForkManager problem by Limbic~Region
in thread Parallel::ForkManager problem by Murcia

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