VISIT www.linuxtopic.com
1. hostname configuration
2. hosts entry
3. dns resolve entry
dns entry
network configuration ,
hostname configuration ,
dns configuration resolve and
hosts in Linux step by step
http://www.linuxtopic.com/2016/03/hostname-configuration-in-centos.html
http://www.linuxtopic.com/2016/03/network-configuration-in-linux.html
