start gnu screen with existing running program [closed]

Question

Say I forget to run screen at the beginning of login, I've started up a program like emacs, have many files open, now I want to attach this to a session of screen. Is there any way to do this? Or do I have to exit emacs, run screen, then run emacs again, opening up my work from the beginning?

Thanks for your help.

Answer 1

This post from ServerFault might be useful: https://serverfault.com/questions/24425/can-i-nohup-screen-an-already-started-process

Answer 2

reptyr works if you're on linux