WHO(1)                      NetBSD Reference Manual                     WHO(1)

     who - display who is logged in

     who [-mTuH] [file]
     who am i

     The who utility displays a list of all users currently logged on, showing
     for each user the login name, tty name, the date and time of login, and
     hostname if not local.

     Available options:

     -m    Only print information about the current terminal.  This is the
           POSIX way of saying who am i.

     -T    Print a character after the user name indicating the state of the
           terminal line: `+' if the terminal is writable; `-' if it is not;
           and `?' if a bad line is encountered.

     -u    Print the idle time for each user.

     -H    Write column headings above the regular output.

     am I  Returns the invoker's real user name.

     file  By default, who gathers information from the file /var/run/utmp.
           An alternative file may be specified which is usually /var/log/wtmp
           (or /var/log/wtmp.[0-6] depending on site policy as wtmp can grow
           quite large and daily versions may or may not be kept around after
           compression by ac(8)).  The wtmp file contains a record of every
           login, logout, crash, shutdown and date change since wtmp was last
           truncated or created.

     If /var/log/wtmp is being used as the file, the user name may be empty or
     one of the special characters '|', '}' and '~'.  Logouts produce an out-
     put line without any user name.  For more information on the special
     characters, see utmp(5).


     last(1), mesg(1), users(1), getuid(2), utmp(5)

     The who utility is expected to conform to IEEE Std 1003.2-1992

     A who utility appeared in Version 6 AT&T UNIX.

NetBSD 1.6                     December 6, 1994                              1

You can also request any man page by name and (optionally) by section:


Use the DEFAULT collection to view manual pages for third-party software.

©1994 Man-cgi 1.15, Panagiotis Christias
©1996-2019 Modified for NetBSD by Kimmo Suominen