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