NAME

     who - print list of currently logged in users


SYNOPSIS

     who [file]


EXAMPLES

     who                 # Print user names, terminals and times


DESCRIPTION

     Who prints a list of currently logged in  users.   For  each
     one,  the  user  name,  terminal, and login time is printed.
     This program gets its information from the  file  /etc/utmp,
     which  is  updated  by  init and login. If the file does not
     exist, neither of these will create it,  and  who  will  not
     work.    Note   that  if  you  decide  to  create  an  empty
     /usr/adm/wtmp to enable the login accounting, it  will  grow
     forever and eventually fill up your disk unless you manually
     truncate it from time to time.  If an optional file name  is
     provided, the logins in that file will be printed.


SEE ALSO

     utmp(5).