Usage:  sg_get_config [--brief] [--current] [--help] [--hex] [--inner-hex]
                      [--list] [--raw] [--readonly] [--rt=RT]
                      [--starting=FC] [--verbose] [--version] DEVICE
  where:
    --brief|-b       only give feature names of DEVICE (don't decode)
    --current|-c     equivalent to '--rt=1' (show current)
    --help|-h        print usage message then exit
    --hex|-H         output response in hex
    --inner-hex|-i    decode to feature name, then output features in hex
    --list|-l        list all known features + profiles (ignore DEVICE)
    --raw|-R         output in binary (to stdout)
    --readonly|-q    open DEVICE read-only (def: open it read-write)
    --rt=RT|-r RT    default value is 0
                     0 -> all feature descriptors (regardless of currency)
                     1 -> all current feature descriptors
                     2 -> only feature descriptor matching 'starting'
    --starting=FC|-s FC    starting from feature code (FC) value
    --verbose|-v     verbose
    --version|-V     output version string

Get configuration information for MMC drive and/or media