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WHO(I)                       3/15/72                       WHO(I)







NAME

     who  -  who is on the system



SYNOPSIS

     who [ who-file ]



DESCRIPTION

     Who,  without  an  argument,  lists  the  name,   typewriter

     channel, and login time for each current UNIX user.



     Without an argument, who  examines  the  /tmp/utmp  file  to

     obtain  its  information.   If a file is given, that file is

     examined.  Typically the given file will be /tmp/wtmp, which

     contains  a  record  of all the logins since it was created.

     Then who will list logins, logouts, and  crashes  since  the

     creation of the wtmp file.



     Each login is listed with user name, typewriter  name  (with

     `/dev/' suppressed), and date and time.  When an argument is

     given, logouts produce a similar line without a  user  name.

     Reboots  produce  a line with `x' in the place of the device

     name, and a fossil time indicative of when the  system  went

     down.



FILES

     /tmp/utmp



SEE ALSO

     login(I), init(VII)



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