flycappuccino 2019-04-03
代码如下:
#!/bin/bash  
while [ "1" ]  
do  
eth=$1  
RXpre=$(cat /proc/net/dev | grep $eth | tr : " " | awk '{print $2}')  
TXpre=$(cat /proc/net/dev | grep $eth | tr : " " | awk '{print $10}')  
sleep 1  
RXnext=$(cat /proc/net/dev | grep $eth | tr : " " | awk '{print $2}')  
TXnext=$(cat /proc/net/dev | grep $eth | tr : " " | awk '{print $10}')  
clear  
echo  -e  "\t RX `date +%k:%M:%S` TX"  
RX=$((${RXnext}-${RXpre}))  
TX=$((${TXnext}-${TXpre}))  
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 $1/1024 "KB/s"}')  
fi  
echo -e "$eth \t $RX   $TX "  
done