http://www.liusuping.com/ubuntu-linux/RHEL6-Linux-install-desktop.html
http://godontop.com/%E7%BB%99%E6%9C%80%E5%B0%8F%E5%8C%96%E5%AE%89%E8%A3%85%E7%9A%84rhel-6%E9%85%8D%E7%BD%AE%E6%A1%8C%E9%9D%A2%E7%8E%AF%E5%A2%83-74/
