啟動
啟動代碼格式：nginx安裝目錄地址 -c nginx配置文件地址
例如：
[root@sijizhen sbin]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
停止
nginx有三種停止方式：
從容停止
1.查看進程 ps -ef|grep nginx
[root@sijizhen sbin]# ps -ef|grep nginx
root 9862 1 0 01:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody 9863 9862 0 01:04 ? 00:00:00 nginx: worker process
root 9886 1612 0 01:15 pts/0 00:00:00 grep nginx
2.殺死進程
[root@sijizhen sbin]# kill -QUIT 9862
快速停止
1、查看進程號
[root@sijizhen sbin]# ps -ef|grep nginx
root 9892 1 0 01:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody 9893 9892 0 01:17 ? 00:00:00 nginx: worker process
root 9895 1612 0 01:18 pts/0 00:00:00 grep nginx
2.殺死進程
[root@sijizhen sbin]# kill -TERM 9892
強制停止
[root@sijizhen sbin]# pkill -9 nginx
重啟
1、驗證nginx配置文件是否正確
方法一：進入nginx安裝目錄sbin下，輸入命令./nginx -t
[root@sijizhen sbin]# ./nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
說明配置文件正確！
方法二：在啟動命令-c前加-t
[root@sijizhen sbin]# /usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.conf
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
2、重啟Nginx服務
方法一：進入nginx可執行目錄sbin下，輸入命令./nginx -s reload 即可
[root@sijizhen sbin]# ./nginx -s reload
方法二：查找當前nginx進程號，然后輸入命令：kill -HUP 進程號 實現重啟nginx服務
[root@sijizhen sbin]# ps -ef|grep nginx
root 9928 1 0 01:24 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody 9935 9928 0 01:25 ? 00:00:00 nginx: worker process
root 9938 1612 0 01:26 pts/0 00:00:00 grep nginx
[root@sijizhen sbin]# kill -HUP 9928
參考：https://www.cnblogs.com/codingcloud/p/5095066.html