How to check the Nginx process in Linux?

There are several methods to view Nginx processes in Linux.

1. Check processes using the ps command.
2. Display all processes and filter out the ones related to nginx.
3. Monitor processes in real time using the top command.
4. peak or summit
5. Check the status of the Nginx service using the systemctl command.
6. Check the status of nginx using systemctl.
7. To view the main process ID (PID) file of Nginx:
   By default, the PID file for Nginx is located at /var/run/nginx.pid, you can use the cat command to view the process ID.
8. Show me the location of the nginx process ID file.

You can obtain information about the Nginx process, such as the process ID (PID), parent process ID (PPID), and process status, using any method.