/application/nginx/sbin/nginx -h

[root@web03 ~]# /application/nginx/sbin/nginx -h
nginx version: nginx/1.6.3
Usage: nginx [-?hvVtq] [-s signal] [-c filename] [-p prefix] [-g directives]

Options:
-?,-h : this help
-v : show version and exit
-V : show version and configure options then exit
-t : test configuration and exit
-q : suppress non-error messages during configuration testing
-s signal : send signal to a master process: stop, quit, reopen, reload
-p prefix : set prefix path (default: /application/nginx-1.6.3/)
-c filename : set configuration file (default: conf/nginx.conf)
-g directives : set global directives out of configuration file

[root@web03 ~]#