What are the common operations of Nginx?

[root@localhost conf]# /usr/local/nginx/sbin/nginx  -tnginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

[root@localhost conf]# /usr/local/nginx/sbin/nginx  -s  reload

[root@localhost sbin]# /usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.confnginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

[root@localhost sbin]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

[root@localhost sbin]# ps -ef|grep nginxroot       4870      1  0 22:35 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nginx      4871   4870  0 22:35 ?        00:00:00 nginx: worker process
root       4873   2389  0 22:35 pts/0    00:00:00 grep --color=auto nginxs