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 Interprocess Communication (IPC)
   In general, don't directly access the system in code meant to be
   portable. That means, no "system", "exec", "fork", "pipe", ``, "qx/
+/",
   "open" with a "|", nor any of the other things that makes being a p
+erl
   hacker worth being.

sub auto_quote_system {
    my $line = shift;
...
    }
    return qq{"$cmd" @parts};
}