trigger node js file

Question

I have a JS file that runs via node.js, so normally I crank open a terminal window and type something like node myfile.js and it runs and runs all day; fun.

Answer 1

Assuming you're on Unix-based OS:

You can run shell commands via the exec() function:

// in php file
// to start the script 
exec("node myscript.js &", $output);

$output becomes an array of each line of output, so you can see what the process id is. Then you would use that process id to kill the script:

exec("kill " . $processid);

Answer 2

I would avoid any direct interaction with the shell. It would probably be the safest, to solve it this way:

• implement some overall "service"-script, that launches the user-node-app and keeps it running (something like https://github.com/isaacs/node-supervisor)
• Make it, so it automatically reboots on changes of either the relevant files or a database-entry
• With the user triggering a reboot, add a flag (timestamp?) to the database-entry or file that is watched by the reboot-script. It then will reboot the node.js-app/script.