Nagios在验证配置文件方面做的非常到位，只需通过一个命令（）即可完成

A.usr/local/nagios/bin/nagios-p/usr/local/nagios/etc/nagios.cfg
B.usr/local/nagios/bin/nagios-x/usr/local/nagios/etc/nagios.cfg
C.usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg
D.usr/local/nagios/bin/nagios-q/usr/local/nagios/etc/nagios.cfg