linux快速查看网卡配置信息以及IP地址

#!/bin/bash

function err(){
if [ $? == 1 ];then
echo " **"
fi
}

if [ $# -eq 0 ]; then
defnet="wlan0"
else
defnet=$@
fi

for i in $defnet
do
echo -e "\033[42;37;5m $i info: \033[0m"
echo -n "IPv4 address: "
ifconfig $i 2>/dev/null| egrep -o "inet addr:[^ ]*" | grep -o "[0-9.]*"
err
echo -n "IPv6 address: "
ifconfig $i 2>/dev/null| egrep -o "inet6 addr: [^ ]*" | cut -d " " -f 3| grep -o "[a-z0-9:/]*"
err
echo -n "MAC address: "
ifconfig $i 2>/dev/null| egrep -o "addr .*" | grep -o "[A-Z0-9:]*"
err
echo -n "subnet Mask: "
ifconfig $i 2>/dev/null| egrep -o "Mask:.*" | grep -o "[0-9.]*"
err
echo -n "Broadcast: "
ifconfig $i 2>/dev/null| egrep -o "Bcast:[^ ]*" | grep -o "[0-9.]*"
err
echo -n "Receive Bytes: "
ifconfig $i 2>/dev/null| egrep -o '\([^()]*\)'|head -1
err
echo -n "Send Bytes: "
ifconfig $i 2>/dev/null| egrep -o '\([^()]*\)'|tail -1
err
echo -e "\033[44;37;5m $i Extra information:\033[0m"
echo -n "外部IP： "
curl ifconfig.me
err
echo -e
done
exit