Centos Notes

To install ipconfig:

   yum install net-tools

To disable X window system:

Legacy systems:

   * http://www.cyberciti.biz/faq/linux-disable-x-windows-system/

Edit the file /etc/inittab. Change this line:

   id:5:initdefault:

to:

   id:3:initdefault

Modern systems:

   /bin/rm /etc/systemd/system/default.target
   ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target