linux 脚本測试网络速度

example: ./netspeed eth0

1 #!/bin/bash

2

3 INTERVAL="1"  # update interval in seconds

4

5 if [ -z "$1" ]; then

6 echo

7 echo usage: $0 [network-interface]

8 echo

9 echo e.g. $0 eth0

10 echo

11 exit

12 fi

13

14 IF=$1

15

16 while true

17 do

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

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

20 sleep $INTERVAL

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

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

23 TBPS=`expr $T2 - $T1`

24 RBPS=`expr $R2 - $R1`

25 TKBPS=`expr $TBPS / 1024`

26 RKBPS=`expr $RBPS / 1024`

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

28 done