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- date 94.06.08.15.12.24; author rzsfl; state Exp;
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- @.\" Copyright (c) 1980, 1991 The Regents of the University of California.
- .\" All rights reserved.
- .\"
- .\" Redistribution and use in source and binary forms, with or without
- .\" modification, are permitted provided that the following conditions
- .\" are met:
- .\" 1. Redistributions of source code must retain the above copyright
- .\" notice, this list of conditions and the following disclaimer.
- .\" 2. Redistributions in binary form must reproduce the above copyright
- .\" notice, this list of conditions and the following disclaimer in the
- .\" documentation and/or other materials provided with the distribution.
- .\" 3. All advertising materials mentioning features or use of this software
- .\" must display the following acknowledgement:
- .\" This product includes software developed by the University of
- .\" California, Berkeley and its contributors.
- .\" 4. Neither the name of the University nor the names of its contributors
- .\" may be used to endorse or promote products derived from this software
- .\" without specific prior written permission.
- .\"
- .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- .\" SUCH DAMAGE.
- .\"
- .\" from: @@(#)fingerd.8 6.4 (Berkeley) 3/16/91
- .\" $Id: fingerd.8,v 1.2 1993/08/01 07:40:24 mycroft Exp $
- .\"
- .Dd March 16, 1991
- .Dt FINGERD 8
- .Os BSD 4.3
- .Sh NAME
- .Nm fingerd
- .Nd remote user information server
- .Sh SYNOPSIS
- .Nm fingerd
- .Sh DESCRIPTION
- .Nm Fingerd
- is a simple protocol based on
- .%T RFC742
- that provides an interface to the
- Name and Finger programs at several network sites.
- The program is supposed to return a friendly,
- human-oriented status report on either the system at the moment
- or a particular person in depth.
- There is no required format and the
- protocol consists mostly of specifying a single
- .Dq command line .
- .Pp
- .Nm Fingerd
- listens for
- .Tn TCP
- requests at port 79.
- Once connected it reads a single command line
- terminated by a
- .Aq Tn CRLF
- which is passed to
- .Xr finger 1 .
- .Nm Fingerd
- closes its connections as soon as the output is finished.
- .Pp
- If the line is null (i.e. just a
- .Aq Tn CRLF
- is sent) then
- .Xr finger
- returns a
- .Dq default
- report that lists all people logged into
- the system at that moment.
- .Pp
- If a user name is specified (e.g.
- .Pf eric Aq Tn CRLF )
- then the
- response lists more extended information for only that particular user,
- whether logged in or not.
- Allowable
- .Dq names
- in the command line include both
- .Dq login names
- and
- .Dq user names .
- If a name is ambiguous, all possible derivations are returned.
- .Sh SEE ALSO
- .Xr finger 1
- .Sh BUGS
- Connecting directly to the server from a
- .Tn TIP
- or an equally narrow-minded
- .Tn TELNET Ns \-protocol
- user program can result
- in meaningless attempts at option negotiation being sent to the
- server, which will foul up the command line interpretation.
- .Nm Fingerd
- should be taught to filter out
- .Tn IAC Ns \'s
- and perhaps even respond
- negatively
- .Pq Tn IAC WON'T
- to all option commands received.
- .Sh HISTORY
- The
- .Nm
- command appeared in
- .Bx 4.3 .
- @
-