What is a "Supervisor"?

"Supervisor" is a process manager which provides a singular interface for managing and monitoring several long-running programs.

Run a PHP command using Supervisor

To run a PHP command using Linux Supervisor, you must follow the steps below:

1. Install "Supervisor"

   sudo apt-get install supervisor
   

2. Create a "Supervisor" program configuration file:

   sudo nano /etc/supervisor/conf.d/your_program.conf
   

3. Add the following content to the configuration file:

   [program:your_program_name]
   command=your_command_here
   autostart=true
   autorestart=true
   stderr_logfile=/var/log/idle.err.log # Remove this line if "error log" isn't nedded
   stdout_logfile=/var/log/idle.out.log # Remove this line if "output log" isn't nedded
   

4. Save and close the file

5. Update the "Supervisor" configuration:

   sudo supervisorctl reread
   

6. Next, run the command below, to update the "Supervisor" process group with any new or changed programs:

   sudo supervisorctl update
   

7. Start the program:

   sudo supervisorctl start your_program_name
   

8. To check the status of the program:

   sudo supervisorctl status your_program_name
   

9. To stop the program:

   sudo supervisorctl stop your_program_name
   ```
   

As a result, your PHP script should be run as a process managed by "Supervisor," which will restart it if it crashes or stops for any other reason.

Reference: How To Install and Manage Supervisor | DigitalOcean