You can modify it to: 
system("$cmd $_ &") foreach @args;

[download]
The "&" starts the process in the background.

In reply to Re^3: Simple Perl "Shell" Script on Windows XP to Run Multiple, Simultaneous Processes in Parallel by elTriberium
in thread Simple Perl "Shell" Script on Windows XP to Run Multiple, Simultaneous Processes in Parallel by Jim

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