Usage: sg_read_buffer [--16] [--eh_code=EHC] [--help] [--hex] [--id=ID]
                      [--inhex=FN] [--length=LEN] [--long] [--mode=MO]
                      [--no_output] [--offset=OFF] [--raw] [--readonly]
                      [--specific=MS] [--verbose] [--version] DEVICE
  where:
    --16|-L             issue READ BUFFER(16) (def: 10)
    --eh_code=EHC|-e EHC    same as '-m eh -i EHC' where EHC is the
                            error history code
    --help|-h           print out usage message
    --hex|-H            print output in hex
    --id=ID|-i ID       buffer identifier (0 (default) to 255)
    --inhex=FN|-I FN    filename FN contains hex data to decode
                        rather than DEVICE. If --raw given then binary
    --length=LEN|-l LEN    length in bytes to read (def: 4, 64 for eh)
    --long|-L           issue READ BUFFER(16) (def: 10)
    --mode=MO|-m MO     read buffer mode, MO is number or acronym (def: 0)
    --no_output|-N      perform the command then exit
    --offset=OFF|-o OFF    buffer offset (unit: bytes, def: 0)
    --raw|-r            output response in binary to stdout
    --readonly|-R       open DEVICE read-only (def: read-write)
    --specific=MS|-S MS    mode specific value; 3 bit field (0 to 7)
    --verbose|-v        increase verbosity
    --version|-V        print version string and exit

Performs a SCSI READ BUFFER (10 or 16) command. Use '-m xxx' to list
available modes. Some responses are decoded, others are output in hex.