chmod
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.. code-block:: text

  usage: chmod [-r] <mode> <path>                             : set mode for <path> (-r recursive)
    <mode> can be only numerical like 755, 644, 700
    <mode> are automatically changed to 2755, 2644, 2700 respectivly
    <mode> to disable attribute inheritance use 4755, 4644, 4700 ...