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zPlugin utilities.N)List)util)os)STANDARD_BINARY_DIRS)pathreturncCsFtjj|}g}x0|r@|j|tjj|\}}||dkrPqW|S)aRetrieves all possible path prefixes of a path, in descending order
    of length. For instance:

      * (Linux) `/a/b/c` returns `['/a/b/c', '/a/b', '/a', '/']`
      * (Windows) `C:\a\b\c` returns `['C:\a\b\c', 'C:\a\b', 'C:\a', 'C:']`

    :param str path: the path to break into prefixes

    :returns: all possible path prefixes of given path in descending order
    :rtype: `list` of `str`
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    :param str cmd: the command that is being searched for in the PATH

    :returns: True if the operation succeeded, False otherwise
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