Detach running process from current tty

Many a time, I've run a command on a remote machine and realised that it will take longer to finish than I care to spend. The process has not been started in a screen/tmux session, nor have I used nohup to kick it off. This page provided a great, solution.

http://monkeypatch.me/blog/move-a-running-process-to-a-new-screen-shell.html