Usage: sg_write_verify [--16] [--bytchk=BC] [--dpo] [--group=GN] [--help]
                       [--ilen=IL] [--in=IF] --lba=LBA [--num=NUM]
                       [--repeat] [--timeout=TO] [--verbose] [--version]
                       [--wrprotect=WPR] DEVICE
  where:
    --16|-S              do WRITE AND VERIFY(16) (default: 10)
    --bytchk=BC|-b BC    set BYTCHK field (default: 0)
    --dpo|-d             set DPO bit (default: 0)
    --group=GN|-g GN     GN is group number (default: 0)
    --help|-h            print out usage message
    --ilen=IL| -I IL     input (file) length in bytes, becomes data-out
                         buffer length (def: deduced from IF size)
    --in=IF|-i IF        IF is a file containing the data to be written
    --lba=LBA|-l LBA     LBA of the first block to write and verify;
                         no default, must be given
    --num=NUM|-n NUM     logical blocks to write and verify (def: 1)
    --repeat|-R          while IF still has data to read, send another
                         command, bumping LBA with up to NUM blocks again
    --timeout=TO|-t TO   command timeout in seconds (def: 60)
    --verbose|-v         increase verbosity
    --version|-V         print version string then exit
    --wrprotect|-w WPR   WPR is the WRPROTECT field value (def: 0)

Performs a SCSI WRITE AND VERIFY (10 or 16) command on DEVICE, startings
at LBA for NUM logical blocks. More commands performed only if '--repeat'
option given. Data to be written is fetched from the IF file.