If I have a nc process running and listening on a port...
 

I am basically waiting for another computer to connect to it. I started the with program with nc -vlp 5534 &

If I check with lsof -i and see that later on it's connected, how would I interact with that process?

I'm guessing some command plus the pid?

Nevermind, learned to use screen, I like it man. At first seems intimidating. But after a few mins, it's really easy to operate. I like it a lot actually.

Thanks for sharing.

I like use "google"。^_^，you can ask for help using "man"