Linux 下配置静态ip地址

the original state is showed as following:

重新启动网络服务：
sudo /etc/init.d/networking restart
参考：
http://www.linuxidc.com/Linux/2015-07/120224p2.htm
http://jingyan.baidu.com/article/e5c39bf5bbe0e739d7603396.html