Select Code to Download

  $pid = Parallel::Jobs::start_job({ stdin_file => filename |
                     stdin_handle => *HANDLE,
...
                     stderr_handle => *HANDLE |
                     stderr_capture => 1 },
                     ... cmd as above ...);

#!/usr/bin/perl -w

...
  print "Ciao.  All the parallel parts are done.\n";
}