WHO(1)

NAME
       who - show who is logged on

SYNOPSIS
       who  [-imqsuwHT]  [--count]  [--idle] [--heading] [--help]
       [--message] [--mesg] [--version] [--writable]  [file]  [am
       i]

DESCRIPTION
       This  documentation  is no longer being maintained and may
       be inaccurate or incomplete.  The Texinfo documentation is
       now the authoritative source.

       This  manual  page  documents  the GNU version of who.  If
       given no non-option arguments, who  prints  the  following
       information for each user currently logged on:
              login name
              terminal line
              login time
              remote hostname or X display

       If given one non-option argument, who uses that instead of
       /etc/utmp as the name of the file containing the record of
       users  logged on.  /etc/wtmp is commonly given as an argu-
       ment to who to look at who has previously logged on.

       If given two non-option arguments,  who  prints  only  the
       entry  for  the user running it (determined from its stan-
       dard input), preceded by the hostname.  Traditionally, the
       two arguments given are `am i', as in `who am i'.

   OPTIONS
       -m     Same as `who am i'.

       -q, --count
              Print  only the login names and the number of users
              logged on.  Overrides all other options.

       -s     Ignored; for compatibility with other  versions  of
              who.

       -i, -u, --idle
              After the login time, print the number of hours and
              minutes that the user has been idle.  `.' means the
              user  was  active  in last minute.  `old' means the
              user was idle for more than 24 hours.

       -H, --heading
              Print a line of column headings.

       -w, -T, --mesg, --message, --writable
              Like -s, plus after the login name print a  charac-
              ter indicating the user's message status:
              +      allowing write messages
              -      disallowing write messages
              ?      cannot find terminal device

       --help Print  a  usage message on standard output and exit
              successfully.

       --version
              Print version information on standard  output  then
              exit successfully.