LINUX系统流量监控脚本

#!/bin/bash

#系统流量监控

R1=`cat /sys/class/net/eth0/statistics/rx_bytes`

T1=`cat /sys/class/net/eth0/statistics/tx_bytes`

sleep 1

R2=`cat /sys/class/net/eth0/statistics/rx_bytes`

T2=`cat /sys/class/net/eth0/statistics/tx_bytes`

TBPS=`expr $T2 - $T1`

RBPS=`expr $R2 - $R1`

TKBPS=`expr $TBPS / 1024`

RKBPS=`expr $RBPS / 1024`

echo "上传速率eth0: $TKBPS kb/s 下载速率eth0: $RKBPS kb/s at $(date +%Y-%m-%d\ %H:%M:%S)" >>/home/system/net.log