sgm_dd: : 1.44 20151219

Usage: sgm_dd [bs=BS] [count=COUNT] [ibs=BS] [if=IFILE] [iflag=FLAGS] [obs=BS] [of=OFILE] [oflag=FLAGS] [seek=SEEK] [skip=SKIP] [--help] [--version] [bpt=BPT] [cdbsz=6|10|12|16] [dio=0|1] [fua=0|1|2|3] [sync=0|1] [time=0|1] [verbose=VERB] where: bpt is blocks_per_transfer (default is 128) bs must be device block size (default 512) cdbsz size of SCSI READ or WRITE cdb (default is 10) count number of blocks to copy (def: device size) dio 0->indirect IO on write, 1->direct IO on write (only when read side is sg device (using mmap)) fua force unit access: 0->don't(def), 1->OFILE, 2->IFILE, 3->OFILE+IFILE if file or device to read from (def: stdin) iflag comma separated list from: [direct,dpo,dsync,excl,fua, null] of file or device to write to (def: stdout), OFILE of '.' treated as /dev/null oflag comma separated list from: [append,dio,direct,dpo,dsync, excl,fua,null] seek block position to start writing to OFILE skip block position to start reading from IFILE sync 0->no sync(def), 1->SYNCHRONIZE CACHE on OFILE after copy time 0->no timing(def), 1->time plus calculate throughput verbose 0->quiet(def), 1->some noise, 2->more noise, etc --help print usage message then exit --version print version information then exit Copy from IFILE to OFILE, similar to dd command specialized for SCSI devices for which mmap-ed IO attempted