测试网卡流量脚本

下面是一个测试网卡流量的脚本，脚本内容如下：

#!/bin/bash

function usage

{

echo "use ./test_net.sh ethX time"

echo "$1 is you network interface "

echo "$2 is the last time!"

echo "for example: ./test_net.sh eth0 2"

exit 100

}

if [ $# -lt 2 -o $# -gt 2 ];then

usage

fi

eth=$1

time=$2

old_inbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $3}'`

old_outbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $11}'`

while true

do

sleep $time

new_inbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $3}'`

new_outbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $11}'`

inbw=`expr $((($new_inbw-$old_inbw)/$time))`

outbw=`expr $((($new_outbw-$old_outbw)/$time))`

echo "$eth: IN:$inbw bytes OUT:$outbw bytes"

old_inbw=${new_inbw}

old_outbw=${new_outbw}

done

exit 0

运行效果：

[root@bogon shell]# ./test_net.sh eth0 2

eth0: IN:3097 bytes OUT:50374 bytes

eth0: IN:3158 bytes OUT:44202 bytes

eth0: IN:2587 bytes OUT:58932 bytes

eth0: IN:2104 bytes OUT:51543 bytes

文章出处：飞诺网(www.diybl.com):http://www.diybl.com/course/6_system/linux/Linuxjs/20100609/208864.html