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  1. or download this
    system('echo $PATH');
  2. or download this
    system('/bin/sh', '-c', 'echo $PATH');
  3. or download this
    system('echo', '/foo:/bar');
  4. or download this
    system('echo', '$PATH');
  5. or download this
    system('echo $PATH');
  6. or download this
    system('/bin/sh', '-c', 'echo $PATH');
  7. or download this
    system('echo', $ENV{PATH});
  8. or download this
    system('PATH=/foo prog arg');
  9. or download this
    local $ENV{PATH} = '/foo';
system('prog', 'arg');