shell腳本實現Linux流量監控

流量監控腳本

#!/bin/bash`
#

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 "上傳速率 eth0: $TKBPS kb/s 下載速率 eth0: $RKBPS kb/s at $(date +%Y%m%d%H:%M:%S)" >>/usr/monitor/network/network_$(date +%Y%m%d).log

 

 

當天最高上傳及下載流量統計

 

TX=0;

RX=0;

 

MAX_TX=0;

MAX_RX=0;

 

while read line

do

        a=`echo $line | grep "eth0" |awk '{print $3}'`

 

if [ $a -ge 0 ]

then

        TX=$a

        if [ $TX -ge $MAX_TX ]

        then

                MAX_TX=$TX

        fi

fi

 

        b=`echo $line | grep "eth0" |awk '{print $7}'`

 

if [ $b -ge 0 ]

then

        RX=$b

        if [ $RX -ge $MAX_RX ]

        then

                MAX_RX=$RX

        fi

fi

done < /usr/monitor/network/network_$(date +%Y%m%d).log

 

echo "最高上傳速度爲 $MAX_TX kb/s at $(date +%Y%m%d)">>/usr/monitor/network/tongji.log

 

echo "最高下載速度爲 $MAX_RX kb/s at $(date +%Y%m%d)">>/usr/monitor/network/tongji.log