感谢我们的老大leon给我提供的脚本非常方便，而且使用：
[root@localhost local]# vi netflow.sh
- #! /bin/bash
- while true
- do
- receive1=`cat /proc/net/dev|grep eth0 | awk '{print$1}'|sed -s 's/eth0://g'`
- send1=`cat /proc/net/dev|grep eth0 | awk '{print$9}'`
- sleep 1
- receive2=`cat /proc/net/dev|grep eth0 | awk '{print$1}'|sed -s 's/eth0://g'`
- receive_cnt=`expr $receive2 - $receive1`
- receive_cnt=`expr $receive_cnt / 1024`
- send2=`cat /proc/net/dev|grep eth0 | awk '{print$9}'`
- send_cnt=`expr $send2 - $send1`
- send_cnt=`expr $send_cnt / 1024`
- total_cnt=`expr $send_cnt + $receive_cnt`
- echo $total_cnt
- echo 'eth0 Receive Bytes:'$receive_cnt
- echo 'eth0 Send Bytes:' $send_cnt
- done
