what I want is a desktop environment, not a command line terminal. If my computer monitor is on, I hope someone connects in and can"t see the change, because someone connected to the previous vnc can know that the mouse is moving, and I don"t want it.
of course, you can let multiple users share a desktop environment, or you can let them use a separate desktop environment.
in general, X11 automatically generates a desktop environment after logging in to Linux, which is identified by the environment variable DISPLAY , such as DISPLAY=:0 .
to allow multiple users to share the desktop environment, you only need to open the VNC server in one desktop environment. To use it separately, you need to open a new X11.
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ssh can use key to log in to enhance security. Does vnc have it? if not, isn t it not as secure as ssh? Thank you. Rookies have more problems ...