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  1. or download this
    $dd_command = <<'EO_COMMAND';
       device=/dev/rmt8
    ...
    $status  = ($? >> 8);
    $signo   = ($? & 127);
    $cored   = ($? & 128);
    
  2. or download this
    $dd_command = <<'EO_COMMAND';
       device=/dev/rmt8
    ...
    $status  = ($? >> 8);
    $signo   = ($? & 127);
    $cored   = ($? & 128);
    
  3. or download this
    $kidpid = open(FROM_KID, "somecmd 3>&1 1>&2 2>&3 3>&- |") // die $!;
    
  4. or download this
    $fd3 = $fd1;
    $fd1 = $fd2;
    $fd2 = $fd3;
    $fd3 = undef;