Is it possible to grab the screen of another session?
Suppose I'm logged on to the Pi and run a command that does something, say rpi-update. In the mean time I've left the room and am doing something else. Can I log in over SSH and display the screen contents of the other terminal, to se if the update is completed?
It's not a big deal to go back to the Pi but I'd like to know if its possible to 'screenshare' command line terminals.