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   chmod.1p    ( 1 )

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Параметры (Options)

The chmod utility shall conform to the Base Definitions volume of
       POSIX.1‐2017, Section 12.2, Utility Syntax Guidelines.

       The following option shall be supported:

       -R        Recursively change file mode bits. For each file
                 operand that names a directory, chmod shall change the
                 file mode bits of the directory and all files in the
                 file hierarchy below it.