I want to kick off a user such as "bob" on a Linux box which I managed remotely. How to do this?
bob may log on the Linux box by various ways:
Log on the screen on the Linux box (locally) with a X server.
Log on remotely by a ssh shell.
Log on by
ssh -X with X windows.
Started a vnc session and log on it.
I am managing the Linux box remotely via a ssh session (I have root password).