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   # Call this system's shell, returns TRUE on 0 exit code
   # THIS IS THE OPPOSITE SENSE OF system()'s RETURN VALUE
...
   # with this form, it's here to behave like system() with an
   # inverted result.
      $r = run "cat a b c";

$ perl -wMstrict -MIPC::Run=run -e' my $r = run "pstree -A $$" '
perl---sh---pstree