you can use module Proc::Queue, that also limits the number of processes running simultaneously. 
use Proc::Queue size=>5, qw(run_back);

for (@ARGV) {
     run_back { run_code($_) };
}

1 while wait != -1;

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In reply to Re: How to Run Script for Multiple Files in Parallel? by salva
in thread How to Run Script for Multiple Files in Parallel? by monkfan

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