1.Daily Linux commands: http://blog.csdn.net/wirelessqa/article/details/15497429
2.Install radius on CentOS 6.5: http://www.haiyun.me/archives/centos-freeradius-daloradius-ros.html
3.How to fixed problems with selinux with the help of setroubleshoot: http://blog.chinaunix.net/uid-26495963-id-3300475.html
