Nginx 从 0.7.53 版本之后新增了一些命令行参数：-s

-s 参数包含四个命令分别是 stop/quit/reopen/reload

# /usr/local/nginx/sbin/nginx -h

nginx version: nginx/0.7.67

Usage: nginx [-?hvVt] [-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

-s signal     : send signal to a master process: stop, quit, reopen, reload

-p prefix     : set prefix path (default: /usr/local/nginx/)

-c filename   : set configuration file (default: conf/nginx.conf)

-g directives : set global directives out of configuration file

vpser:~#