alex@alex-laptop:~$ whoami
alex
alex@alex-laptop:~$ who
alex tty7 2008-02-20 18:40 (:0)
alex pts/0 2008-02-21 09:10 (:0.0)
alex@alex-laptop:~$
What does the second command mean? I'm logged in twice as alex?
And also, what does tty7 and pts/0 mean? And also, after the date and time, the (:0) and (:0.0). What do those mean?
Basically, what is this command telling me about the logged in users?