脚本测速

#!/bin/bash

 

INTERVAL="1"  # update interval in seconds

 

if[ -z"$1" ];then

        echo

        echousage:$0[network-interface]

        echo

        echoe.g.$0eth0

        echo

        exit

fi

 

IF=$1

 

while true

do

        R1=`cat/sys/class/net/$1/statistics/rx_bytes`

        T1=`cat/sys/class/net/$1/statistics/tx_bytes`

        sleep$INTERVAL

        R2=`cat/sys/class/net/$1/statistics/rx_bytes`

        T2=`cat/sys/class/net/$1/statistics/tx_bytes`

        TBPS=`expr$T2- $T1`

        RBPS=`expr$R2- $R1`

        TKBPS=`expr$TBPS/ 1024`

        RKBPS=`expr$RBPS/ 1024`

        echo"TX $1: $TKBPS kb/s RX $1: $RKBPS kb/s"

done