实时查看系统流量的Shell脚本分享
#!/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$10}')
sleep1
RXnext=$(cat/proc/net/dev|grep$eth|tr:""|awk'{print$2}')
TXnext=$(cat/proc/net/dev|grep$eth|tr:""|awk'{print$10}')
clear
echo -e "\tRX`date+%k:%M:%S`TX"
RX=$((${RXnext}-${RXpre}))
TX=$((${TXnext}-${TXpre}))
if[[$RX-lt1024]];then
RX="${RX}B/s"
elif[[$RX-gt1048576]];then
RX=$(echo$RX|awk'{print$1/1048576"MB/s"}')
else
RX=$(echo$RX|awk'{print$1/1024"KB/s"}')
fi
if[[$TX-lt1024]];then
TX="${TX}B/s"
elif[[$TX-gt1048576]];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
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