I remember that BSD had a command (IIRC it was "watch") that allowed the superuser to watch any tty. I want to use this feature in Linux if available, and I want to use it quite ex-centric way. I have machine on which I will install OpenBSD and during installation I will use serial console attached to my debian server. Next I want to be able to show other (non-privileged) users what I'm doing. Is that possible?