Although the backticks will work. It seems worth pointing out that they are not intended for running an additional perl script, but for collecting the output from a foreign process, e.g.:

my $memout = `chcp`;
$memout =~ /(\d+)/;
print STDERR "Detected code page $1 ... continuing\n";
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Generally, if a piece of perl code should run subordinate to another then it belongs best as a subroutine in a module -- that is to say a module you maintain specifically for your applications, as opposed to a CPAN module.