监控网卡流量

 #!/bin/bash

while true 

 do

time=`date +%m"-"%d:%k":"%M`

day=`date +%m"-"%d`

rx_before=`ifconfig eth0 | sed -n "8"p| awk '{print $2}' | cut -c7-`

tx_before=`ifconfig eth0| sed -n "8"p|awk '{print $6}'| cut -c7-`

sleep 2

rx_after=`ifconfig eth0| sed -n "8"p| awk '{print $2}' | cut -c7-`

tx_after=`ifconfig eth0| sed -n "8"p| awk '{print $6}' | cut -c7-`

rx_result=$[(rx_after-rx_before)/256]

tx_result=$[(tx_after-rx_before)/256]

echo "$time Now_In_Speed: "$rx_result"kbps Now_OUt_Speed:"$tx_result"kbps"

sleep 2

done