I think what you're looking for is in the
Perl FAQ:
How do I start a process in the background?
Several modules can start other processes that do not lock your Perl program. You can use IPC::Open3, Parallel::Jobs, IPC::Run, and some of the POE modules. See CPAN for more details.
You could also use
system("cmd &")
or you could use fork as documented in "fork" in perlfunc, with further examples in perlipc.
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