监控网卡实时流量脚本

• 使用方法：./x.sh 网卡名

#!/bin/bash

NIC=1

echo -e " In ------ Out"

while true; do

OLD_IN=(awk '0~"'NIC'"{print 2}' /proc/net/dev)

OLD_OUT=(awk '0~"'NIC'"{print 10}' /proc/net/dev)

sleep 1

NEW_IN=(awk '0~"'NIC'"{print 2}' /proc/net/dev)

NEW_OUT=(awk '0~"'NIC'"{print 10}' /proc/net/dev)

IN=(printf "%.1f%s" "(((NEW_IN-OLD_IN)/1024))" "KB/s")

OUT=(printf "%.1f%s" "(((NEW_OUT-OLD_OUT)/1024))" "KB/s")

echo "IN $OUT"

sleep 1

done