基于/proc统计网络流量的脚本

#!/bin/sh

# 下面两个参数可根据需要修改

EthXname=eth0 # 网卡名称

StatFreq=2 # 统计间隔时长，单位为：秒，建议为2或2的倍数

# 下面的参数，请不要修改

influx_kbps=0

outflux_kbps=0

influx_mbps=0

outflux_mbps=0

unsigned_long_max=4294967295 # 做溢出处理

Ethname=`cat /proc/net/dev|grep $EthXname|awk -F"[: ]+" '{ printf("%s", $2); }'`

if test "$EthXname" != "$Ethname"; then

echo "Please set EthXname first before running"

exit

fi

influx1_byte=`cat /proc/net/dev|grep $EthXname|awk -F"[: ]+" '{ printf("%d", $3); }'`

outflux1_byte=`cat /proc/net/dev|grep $EthXname|awk -F"[: ]+" '{ printf("%d", $11); }'`

while test 2 -gt 1;

do

sleep $StatFreq

influx2_byte=`cat /proc/net/dev|grep $EthXname|awk -F"[: ]+" '{ printf("%d", $3); }'`

outflux2_byte=`cat /proc/net/dev|grep $EthXname|awk -F"[: ]+" '{ printf("%d", $11); }'`

dd=`date +'%Y-%m-%d/%H:%M:%S'`

if test $influx2_byte -ge $influx1_byte; then

let influx_byte=$influx2_byte-$influx1_byte

else

let influx_byte=$unsigned_long_max-$influx1_byte

let influx_byte=$influx_byte+$influx2_byte

fi

if test $outflux2_byte -ge $outflux1_byte; then

let outflux_byte=$outflux2_byte-$outflux1_byte

else

let outflux_byte=$unsigned_long_max-$outflux1_byte

let outflux_byte=$outflux_byte+$outflux2_byte

fi

let influx_byte=$influx_byte/$StatFreq

let outflux_byte=$outflux_byte/$StatFreq

# TO bps

let influx_bps=$influx_byte*8

let outflux_bps=$outflux_byte*8

# To kbps

let influx_kbps=$influx_bps/1024

let outflux_kbps=$outflux_bps/1024

# To mbps

let influx_mbps=$influx_kbps/1024

let outflux_mbps=$outflux_kbps/1024

        # 输出列说明：统计时间，输入流量（单位：Kbps），输入流量（Mbps），输出流量（Kbps），输出流量（Mbps）

echo "$dd,${influx_kbps}Kbps,${influx_mbps}Mbps,${outflux_kbps}Kbps,${outflux_mbps}Mbps"

let influx1_byte=influx2_byte

let outflux1_byte=outflux2_byte

done