pts/0, pts/1 devices ??
when I type who I can see tty1, tty2, ... terminals, pts/0, and :0
tty1 to ttyn are my consoles
I think :0 is GUI
And what are pts/0, pts/1, ....
Are these remote users logged in by telnet ?
How do I see users logged in by telnet, or ssh, or else ?