#!/bin/bash
ethn=$1
while true
do
? RX_pre=$(cat /proc/net/dev | grep $ethn | sed 's/:/ /g' | awk '{print $2}')
? TX_pre=$(cat /proc/net/dev | grep $ethn | sed 's/:/ /g' | awk '{print $10}')
? sleep 1
? RX_next=$(cat /proc/net/dev | grep $ethn | sed 's/:/ /g' | awk '{print $2}')
? TX_next=$(cat /proc/net/dev | grep $ethn | sed 's/:/ /g' | awk '{print $10}')
? clear
? echo -e "\t RX `date +%k:%M:%S` TX"
? RX=$((${RX_next}-${RX_pre}))
? TX=$((${TX_next}-${TX_pre}))
? if [[ $RX -lt 1024 ]];then
? ? RX="${RX}B/s"
? elif [[ $RX -gt 1048576 ]];then
? ? RX=$(echo $RX | awk '{print $1/1048576 "MB/s"}')
? else
? ? RX=$(echo $RX | awk '{print $1/1024 "KB/s"}')
? fi
? if [[ $TX -lt 1024 ]];then
? ? TX="${TX}B/s"
? elif [[ $TX -gt 1048576 ]];then
? ? TX=$(echo $TX | awk '{print $1/1048576 "MB/s"}')
? else
? ? TX=$(echo $TX | awk '{print $1/1024 "KB/s"}')
? fi
? echo -e "$ethn \t $RX? $TX "
done
