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Annotation of src/usr.bin/who/who.1, Revision 1.2

1.2     ! deraadt     1: .\"    $OpenBSD: who.1,v 1.5 1994/12/07 04:28:47 jtc Exp $
1.1       deraadt     2: .\"    $NetBSD: who.1,v 1.5 1994/12/07 04:28:47 jtc Exp $
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                     35: .\"     @(#)who.1      8.2 (Berkeley) 12/30/93
                     36: .\"
                     37: .Dd December 6, 1994
                     38: .Dt WHO 1
                     39: .Os
                     40: .Sh NAME
                     41: .Nm who
                     42: .Nd display who is logged in
                     43: .Sh SYNOPSIS
                     44: .Nm who
                     45: .Op Fl mTu
                     46: .Op Ar file
                     47: .Nm who
                     48: .Ar am i
                     49: .Sh DESCRIPTION
                     50: The
                     51: .Nm who
                     52: utility displays a list of all users currently logged on, showing for
                     53: each user the login name, tty name, the date and time of login, and
                     54: hostname if not local.
                     55: .Pp
                     56: Available options:
                     57: .Pp
                     58: .Bl -tag -width file
                     59: .It Fl m
                     60: Only print information about the current terminal.  This is the
                     61: .Tn POSIX
                     62: way of saying
                     63: .Nm who
                     64: .Ar am i .
                     65: .It Fl T
                     66: Print a character after the user name indicating the state of the
                     67: terminal line:
                     68: .Sq +
                     69: if the terminal is writable;
                     70: .Sq -
                     71: if it is not;
                     72: and
                     73: .Sq ?
                     74: if a bad line is encountered.
                     75: .It Fl u
                     76: Print the idle time for each user.
                     77: .It Ar \&am I
                     78: Returns the invoker's real user name.
                     79: .It Ar file
                     80: By default,
                     81: .Nm who
                     82: gathers information from the file
                     83: .Pa /var/run/utmp .
                     84: An alternate
                     85: .Ar file
                     86: may be specified which is usually
                     87: .Pa /var/log/wtmp
                     88: (or
                     89: .Pa /var/log/wtmp.[0-6]
                     90: depending on site policy as
                     91: .Pa wtmp
                     92: can grow quite large and daily versions may or may not
                     93: be kept around after compression by
                     94: .Xr ac 8 ) .
                     95: The
                     96: .Pa wtmp
                     97: file contains a record of every login, logout,
                     98: crash, shutdown and date change
                     99: since
                    100: .Pa wtmp
                    101: was last truncated or
                    102: created.
                    103: .El
                    104: .Pp
                    105: If
                    106: .Pa /var/log/wtmp
                    107: is being used as the file, the user name may be empty
                    108: or one of the special characters '|', '}' and '~'.  Logouts produce
                    109: an output line without any user name.  For more information on the
                    110: special characters, see
                    111: .Xr utmp 5 .
                    112: .Sh FILES
                    113: .Bl -tag -width /var/log/wtmp.[0-6] -compact
                    114: .It Pa /var/run/utmp
                    115: .It Pa /var/log/wtmp
                    116: .It Pa /var/log/wtmp.[0-6]
                    117: .El
                    118: .Sh SEE ALSO
                    119: .Xr last 1 ,
                    120: .Xr mesg 1 ,
                    121: .Xr users 1 ,
                    122: .Xr getuid 2 ,
                    123: .Xr utmp 5
                    124: .Sh HISTORY
                    125: A
                    126: .Nm
                    127: utility appeared in
                    128: .At v6 .
                    129: .Sh STANDARDS
                    130: The
                    131: .Nm
                    132: utility is expected to conform to
                    133: .St -p1003.2-92 .