ubuntu pm2 command to run node-express site

If I run my node-express site by hand it works great.

sudo node bin/www

But my other sites are launched and spawn via pm2.

With pm2 I just setup the node startup site.js file and executable and just run ./site.js So pm2 just has to run ./site.js

But this is the first node-express site I've ever tried to run using pm2.

So what I'm not getting is how to make it so pm2 can run the command node bin/www.

I've tried by making the bin/www file executable. And it has the same first line in the file #!/usr/bin/env node But pm2 just will not run it. When I try pm2 echos --help to the console because it fails to interpret the command sudo pm2 node bin/www

How do you get pm2 to run such a command?

via user5903880