Return to who.1 CVS log

Up to [local] / src / usr.bin / who

Annotation of src/usr.bin/who/who.1, Revision 1.12

1.12    ! aaron       1: .\"    $OpenBSD: who.1,v 1.11 2000/03/23 21:39:56 aaron Exp $
1.1       deraadt     2: .\"    $NetBSD: who.1,v 1.5 1994/12/07 04:28:47 jtc Exp $
                      3: .\"
                      4: .\" Copyright (c) 1986, 1991, 1993
                      5: .\"    The Regents of the University of California.  All rights reserved.
                      6: .\"
                      7: .\" Redistribution and use in source and binary forms, with or without
                      8: .\" modification, are permitted provided that the following conditions
                      9: .\" are met:
                     10: .\" 1. Redistributions of source code must retain the above copyright
                     11: .\"    notice, this list of conditions and the following disclaimer.
                     12: .\" 2. Redistributions in binary form must reproduce the above copyright
                     13: .\"    notice, this list of conditions and the following disclaimer in the
                     14: .\"    documentation and/or other materials provided with the distribution.
                     15: .\" 3. All advertising materials mentioning features or use of this software
                     16: .\"    must display the following acknowledgement:
                     17: .\"    This product includes software developed by the University of
                     18: .\"    California, Berkeley and its contributors.
                     19: .\" 4. Neither the name of the University nor the names of its contributors
                     20: .\"    may be used to endorse or promote products derived from this software
                     21: .\"    without specific prior written permission.
                     22: .\"
                     23: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33: .\" SUCH DAMAGE.
                     34: .\"
                     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
1.7       aaron      46: .Op Ar file
1.1       deraadt    47: .Nm who
                     48: .Ar am i
                     49: .Sh DESCRIPTION
1.7       aaron      50: The
                     51: .Nm
1.1       deraadt    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
1.8       aaron      56: The options are as follows:
1.1       deraadt    57: .Bl -tag -width file
                     58: .It Fl m
1.10      aaron      59: Only print information about the current terminal.
                     60: This is the
1.1       deraadt    61: .Tn POSIX
                     62: way of saying
1.7       aaron      63: .Nm
1.1       deraadt    64: .Ar am i .
1.4       denny      65: .It Fl q
                     66: (Quick.) List only the names and the number of users currently
1.11      aaron      67: logged on.
                     68: When this option is used, all other options are ignored.
1.1       deraadt    69: .It Fl T
                     70: Print a character after the user name indicating the state of the
                     71: terminal line:
1.7       aaron      72: .Sq +
1.1       deraadt    73: if the terminal is writable;
1.7       aaron      74: .Sq \-
1.1       deraadt    75: if it is not;
                     76: and
                     77: .Sq ?
                     78: if a bad line is encountered.
                     79: .It Fl u
                     80: Print the idle time for each user.
1.3       flipk      81: .It Fl H
                     82: Write column headings above the regular output.
1.1       deraadt    83: .It Ar \&am I
1.7       aaron      84: Returns the invoker's real user name.
1.1       deraadt    85: .It Ar file
                     86: By default,
1.7       aaron      87: .Nm
1.1       deraadt    88: gathers information from the file
                     89: .Pa /var/run/utmp .
                     90: An alternate
                     91: .Ar file
                     92: may be specified which is usually
                     93: .Pa /var/log/wtmp
                     94: (or
                     95: .Pa /var/log/wtmp.[0-6]
                     96: depending on site policy as
                     97: .Pa wtmp
                     98: can grow quite large and daily versions may or may not
                     99: be kept around after compression by
                    100: .Xr ac 8 ) .
                    101: The
                    102: .Pa wtmp
                    103: file contains a record of every login, logout,
                    104: crash, shutdown and date change
                    105: since
                    106: .Pa wtmp
                    107: was last truncated or
                    108: created.
                    109: .El
                    110: .Pp
                    111: If
                    112: .Pa /var/log/wtmp
                    113: is being used as the file, the user name may be empty
1.10      aaron     114: or one of the special characters
                    115: .Ql | ,
                    116: .Ql } ,
                    117: and
                    118: .Ql \&~ .
                    119: Logouts produce an output line without any user name.
                    120: For more information on the special characters, see
1.1       deraadt   121: .Xr utmp 5 .
                    122: .Sh FILES
                    123: .Bl -tag -width /var/log/wtmp.[0-6] -compact
                    124: .It Pa /var/run/utmp
                    125: .It Pa /var/log/wtmp
                    126: .It Pa /var/log/wtmp.[0-6]
                    127: .El
                    128: .Sh SEE ALSO
                    129: .Xr last 1 ,
                    130: .Xr mesg 1 ,
                    131: .Xr users 1 ,
                    132: .Xr getuid 2 ,
                    133: .Xr utmp 5
1.9       aaron     134: .Sh STANDARDS
                    135: The
                    136: .Nm
                    137: utility is expected to conform to
                    138: .St -p1003.2-92 .
1.1       deraadt   139: .Sh HISTORY
                    140: A
                    141: .Nm
                    142: utility appeared in
1.12    ! aaron     143: .At v5 .