-V, --version Print version
-z, --zero Dump zero counters too. By default they are not shown.
-r, --reset Reset history.
-n, --nooutput Do not display anything, only update history.
-a, --ignore Dump absolute values of counters. The default is to calculate increments since the previous use.
-s, --noupdate Do not update history, so that the next time you will see counters including values accumulated to the moment of this measurement too. -j, --json Display results in JSON format.
-d, --interval <INTERVAL> Run in daemon mode collecting statistics. <INTERVAL> is interval between measurements in seconds.
Time interval to average rates. Default value is 60 seconds.