http://blog.csdn.net/lin_fs/article/details/8555960
http://os.51cto.com/art/201301/376725.htm
http://freeloda.blog.51cto.com/2033581/1307492/    http://zhaochj.blog.51cto.com/368705/1657026
http://nagios-cn.sourceforge.net/nagios-cn/advance.html#macrolist_HOSTOUTPUT