這篇文章主要為大家分享一個簡單的監控流量指令碼,需要的朋友可以參考下。

實現程式碼：

#!/bin/bash
eth_in_old=$(ifconfig eth0|grep “RX bytes”|sed ‘s/RX bytes://’|awk ‘{print $1}’)
eth_out_old=$(ifconfig eth0|grep “RX bytes”|sed ‘s/.*TX bytes://’|awk ‘{print $1}’)

sleep 1
eth_in_new=$(ifconfig eth0|grep “RX bytes”|sed ‘s/RX bytes://’|awk ‘{print $1}’)
eth_out_new=$(ifconfig eth0|grep “RX bytes”|sed ‘s/.*TX bytes://’|awk ‘{print $1}’)
eth_in=$(echo “scale=2;($eth_in_new – $eth_in_old)/1000.0″|bc)
eth_out=$(echo “scale=2;($eth_out_new – $eth_out_old)/1000” | bc)
echo “IN: $eth_in KB”
echo “OUT:$eth_out KB”

輸出：

[[email protected] hbshell]# ./traffic.sh 
IN: 1.74 KB

OUT:1.17 KB