脚本实现实时显示linux网络流量
时间:2015-05-11 03:51 来源:linux.it.net.cn 作者:IT
vim flow.sh
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#!/bin/bash
#caishzh 20121030
#displays the current Traffic
ETH=$1
ETH=${ETH:-eth0}
IP=`ifconfig $ETH|awk -F '[ :]+' '/inet addr/{print $4}'`
while true;do
let I+=1
NOW=`date +"%F %T"`
TX1=`grep $ETH /proc/net/dev | tr : " " | awk '{print $10}'`
RX1=`grep $ETH /proc/net/dev | tr : " " | awk '{print $2}'`
sleep 1
TX2=`grep $ETH /proc/net/dev | tr : " " | awk '{print $10}'`
RX2=`grep $ETH /proc/net/dev | tr : " " | awk '{print $2}'`
let TX=(TX2-TX1)/1024
let RX=(RX2-RX1)/1024
let TX_TOTAL+=$TX
let RX_TOTAL+=$RX
let TX_AVERAGE=TX_TOTAL/${I}
let RX_AVERAGE=RX_TOTAL/${I}
clear
printf "%10s\t%20s\n" "Device $ETH [$IP]" "$NOW"
echo "============================================================="
printf "%10s\t%20s\t%20s\n" CURRENT: in:${RX}KB/s out:${TX}KB/s
printf "%10s\t%20s\t%20s\n" AVERAGE: in:${RX_AVERAGE}KB/s out:${TX_AVERAGE}KB/s
printf "%10s\t%20s\t%20s\n" TOTAL: in:${RX_TOTAL}KB out:${TX_TOTAL}KB
done
脚本默认显示eth0的流量，如果要显示其它网卡的流量，请在脚本后接网卡名，如：
./flow.sh eth1
运行结果：
另一个版本，就是改了下显示的方式：
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#!/bin/bash
#caishzh 20130311 version 2
#displays the current Traffic
LANG=C
ETH=$1
ETH=${ETH:-eth0}
IP=`ifconfig $ETH|awk -F '[ :]+' '/inet addr/{print $4}'`
while true;do
let I+=1
NOW=`date +"%F %T"`
TX1=`grep $ETH /proc/net/dev | tr : " " | awk '{print $10}'`
RX1=`grep $ETH /proc/net/dev | tr : " " | awk '{print $2}'`
sleep 1
TX2=`grep $ETH /proc/net/dev | tr : " " | awk '{print $10}'`
RX2=`grep $ETH /proc/net/dev | tr : " " | awk '{print $2}'`
let TX=(TX2-TX1)/1024
let RX=(RX2-RX1)/1024
let TX_TOTAL+=$TX
let RX_TOTAL+=$RX
let TX_AVERAGE=TX_TOTAL/${I}
let RX_AVERAGE=RX_TOTAL/${I}
printf "%10s %10s %10s %10s\t%10s %10s %10s\t%10s %10s %10s\n" "$NOW" CURRENT: in:${RX}KB/s out:${TX}KB/s AVERAGE: in:${RX_AVERAGE}KB/s out:${TX_AVERAGE}KB/s TOTAL: in:${RX_TOTAL}KB out:${TX_TOTAL}KB
done
注：printf那一句是一行，语句太长，自动换行了。
(责任编辑：IT)
vim flow.sh
脚本默认显示eth0的流量，如果要显示其它网卡的流量，请在脚本后接网卡名，如：
运行结果： 另一个版本，就是改了下显示的方式：
注：printf那一句是一行，语句太长，自动换行了。 (责任编辑：IT) |