I'm not using a package from CPAN. IPC::Cmd is one of Perl's core modules, just like subprocess is one of Python's standard libraries. You can find a list of a

I'm not using a package from CPAN. IPC::Cmd is one of Perl's core modules, just like subprocess is one of Python's standard libraries. You can find a list of all of the modules distributed with Perl at http://perldoc.perl.org/perlmodlib.html#THE-PERL-MODULE-LIBRARY http://perldoc.perl.org/perlmodlib.html#THE-PERL-MODULE-LIBR... You can find links to their documentation beginning at http://perldoc.perl.org/index-modules-A.html http://perldoc.perl.org/index-modules-A.html