实时监控网卡流量的命令

1、sar -n DEV 2 0

sar命令详解：
-n { DEV | EDEV | NFS | NFSD | SOCK | ALL }
              Report network statistics.

              With the DEV keyword, statistics from the network devices are reported.  The
              following values are displayed:

              IFACE
                     Name of the network interface for which statistics are reported.

              rxpck/s
                     Total number of packets received per second.

              txpck/s
                     Total number of packets transmitted per second.

              rxbyt/s
                     Total number of bytes received per second.

              txbyt/s
                     Total number of bytes transmitted per second.

              rxcmp/s
                     Number of compressed packets received per second (for cslip etc.).

              txcmp/s
                     Number of compressed packets transmitted per second.

              rxmcst/s
                     Number of multicast packets received per second.

 

2、watch ifconfig 网卡