linux 网络流量监控脚本

 

#!/bin/bash
if [ -z "$1" ]
then
 echo "Oops...Please specify network device name."
 echo "Usage: `basename $0` device"
 echo "eg. `basename $0` eth0"
 exit 1
else
 dev_name="$1"
fi

/sbin/ifconfig $dev_name 2> /dev/null > /dev/null
if [ $? -ne 0 ]
then
 echo "Oops...Cannot find the specified device."
 exit 1
fi

while true
do
 rece_all1=`/sbin/ifconfig $dev_name | grep bytes | awk '{print $2}' | awk -F : '{print $2}'`
 send_all1=`/sbin/ifconfig $dev_name | grep bytes | awk '{print $6}' | awk -F : '{print $2}'`
 sleep 1
 rece_all2=`/sbin/ifconfig $dev_name | grep bytes | awk '{print $2}' | awk -F : '{print $2}'`
 send_all2=`/sbin/ifconfig $dev_name | grep bytes | awk '{print $6}' | awk -F : '{print $2}'`
 rece=`expr $rece_all2 - $rece_all1`
 send=`expr $send_all2 - $send_all1`
 clear
 echo "Last second receive:$(($rece/1024)) KB Last second Send:$(($send/1024)) KB"
 echo "Total receive:$(($rece_all2/1024)) KB ($(($rece_all2/1024/1024))MB) Total send:$(($send_all2/1024)) KB ($(($send_all2/1024/1024))MB)"
done

 

 

http://blog.chinaunix.net/uid-25524253-id-2783110.html