Users on at 07:54 PST Tue Dec 11

Multiple instances of a user name usually refer to a single user who has logged in multiple times. A + in the W column usually indicates that the user is talkable, as Select the user's login name to send mail to the user. Selectable fields on the right access various types of public information maintained by the user.
Login@IdleTTYWUserNameInformation Type
Oct 29 01:0941:01p13 + filboBela Lubkin web finger FTP
Sep 17 13:3515:39p3 + robroyRobroy Gregg web  FTP
Dec 10 17:4014:10p2 + shonnonKeith Reynolds web finger 

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