version: 1.02 20160126

Usage: sg_timestamp [--help] [--milliseconds=MS] [--origin] [--raw] [--readonly] [--seconds=SEC] [--srep] [--verbose] [--version] DEVICE where: --help|-h print out usage message --milliseconds=MS|-m MS set timestamp to MS milliseconds since 1970-01-01 00:00:00 UTC --origin|-o show Report timestamp origin (def: don't) --raw|-r output Report timestamp response to stdout in binary --readonly|-R open DEVICE read only (def: read/write) --seconds=SEC|-s SEC set timestamp to SEC seconds since 1970-01-01 00:00:00 UTC --srep|-S output Report timestamp in seconds (def: milliseconds) --verbose|-v increase verbosity --version|-V print version string and exit Performs a SCSI REPORT TIMESTAMP or SET TIMESTAMP command. The timestamp is SET if either the --milliseconds=MS or --seconds=SEC option is given, otherwise the existing timestamp is reported. The DEVICE stores the timestamp as the number of milliseconds since power up (or reset) or since 1970-01-01 00:00:00 UTC which also happens to be the time 'epoch' of Unix machines. The 'date +%s' command in Unix returns the number of seconds since the epoch. To convert a reported timestamp (in seconds since the epoch) to a more readable form use 'date --date='@<secs_since_epoch>' .