nstat, rtacct - network statistics tools.

Usage: nstat [ -h?vVzrnasd:t: ] [ PATTERN [ PATTERN ] ]
Usage: rtacct [ -h?vVzrnasd:t: ] [ ListOfRealms ]

nstat and

rtacct are simple tools to monitor kernel snmp counters and network interface statistics.

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

lnstat(8)