Nginx prompts address or port occupied

Nginx prompts that the address or port is occupied. Solve the following error: Starting nginx: [emerg] bind () to 0.0.0.0: 80 failed (98: address already use)
This is why port 80 of nginx is occupied. When nginx is started or shut down too much, check which program occupies port 80, such as root @ gaojin-R410IU: /home/gaojin # fuser-n tcp 80 80/tcp: 1116 2. Delete the corresponding program process to kill-9 11163. If confirmed, only nginx is occupied, you can also directly end all nginx processes killall-9 nginx again/etc/init. d/nginx start starts normally