#!/bin/bash
while true
do
time=`date +%m"-"%d:%k":"%M`
day=`date +%m"-"%d`
rx_before=`ifconfig eth0 | sed -n "8"p| awk '{print $2}' | cut -c7-`
tx_before=`ifconfig eth0| sed -n "8"p|awk '{print $6}'| cut -c7-`
sleep 2
rx_after=`ifconfig eth0| sed -n "8"p| awk '{print $2}' | cut -c7-`
tx_after=`ifconfig eth0| sed -n "8"p| awk '{print $6}' | cut -c7-`
rx_result=$[(rx_after-rx_before)/256]
tx_result=$[(tx_after-rx_before)/256]
echo "$time Now_In_Speed: "$rx_result"kbps Now_OUt_Speed:"$tx_result"kbps"
sleep 2
done