Stop and start nginx in linux environment

Step 1: Query nginx main process number

ps -ef | grep nginx
Find the master process in the process list. Its number is the main process number.

Step 2: Stop nginx

Stop Nginx gracefully:
kill -QUIT main process number
Stop Nginx quickly:
kill -TERM main process number
Force stop Nginx:
pkill -9 nginx

Step 3: Start nginx

Environment 1:
[root@iZ25yepqfvvZ /]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

[root@iZ25yepqfvvZ /]# ps -ef | grep nginx
root 18798 1 0 16:35 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
root 18799 18798 0 16:35 ? 00:00:00 nginx: worker process
root 18800 18798 0 16:35 ? 00:00:00 nginx: worker process
root 18801 18798 0 16:35 ? 00:00:00 nginx: worker process
root 18802 18798 0 16:35 ? 00:00:00 nginx: worker process
root 18827 15138 0 16:36 pts/1 00:00:00 grep nginx

environment 2
[root@iZ25yepqfvvZ /]# /usr/sbin/nginx -c /etc/nginx/nginx.conf

[root@iZ25knm9r1gZ ~]# ps -ef | grep nginx
root 28969 1 0 16:50 ? 00:00:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
nginx 28970 28969 0 16:50 ? 00:00:00 nginx: worker process
nginx 28971 28969 0 16:50 ? 00:00:00 nginx: worker process
nginx 28972 28969 0 16:50 ? 00:00:00 nginx: worker process
nginx 28974 28969 0 16:50 ? 00:00:00 nginx: worker process
root 29419 29401 0 17:11 pts/0 00:00:00 grep nginx

The above introduces how to stop and start nginx in the Linux environment, including the relevant aspects. I hope it will be helpful to friends who are interested in PHP tutorials.