Shell脚本获取本地网卡IP、mac地址、子网掩码、dns IP、外网IP

#/usr/bin/env bash# Name: get_network_info.sh# Author: Purple_Grape# This is a script to gather network information of your Linux system.# Test under Ubuntu 10.04 only.#----------------------------NIC=eth0MAC=`LANG=C ifconfig $NIC | awk "/HWaddr/{ print $5 }" `IP=`LANG=C ifconfig $NIC | awk "/inet addr:/{ print $2 }" | awk -F: "{print $2 }"`MASK=`LANG=C ifconfig $NIC | awk -F: "/Mask/{print $4}"`ext_ip=`curl ifconfig.me`if [ -f /etc/resolv.conf ];then dns=`awk "/^nameserver/{print $2}" /etc/resolv.conf `fi#----------------------------echo "Your network information is as below:"echo $MACecho $IPecho $dnsecho $ext_ip