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+.\" Copyright (c) 1983, 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: @(#)talkd.8	6.5 (Berkeley) 3/16/91
+.\"	$Id: talkd.8,v 1.14 2000/07/30 23:57:02 dholland Exp $
+.\"
+.Dd March 16, 1991
+.Dt TALKD 8
+.Os "Linux NetKit (0.17)"
+.Sh NAME
+.Nm talkd
+.Nd remote user communication server
+.Sh SYNOPSIS
+.Nm talkd
+.Op Fl dp
+.Sh DESCRIPTION
+.Nm Talkd
+is the server that notifies a user that someone else wants to
+initiate a conversation.
+It acts a repository of invitations, responding to requests
+by clients wishing to rendezvous to hold a conversation.
+In normal operation, a client, the caller,
+initiates a rendezvous by sending a
+.Tn CTL_MSG
+to the server of
+type
+.Tn LOOK_UP
+(see
+.Aq Pa protocols/talkd.h ) .
+This causes the server to search its invitation
+tables to check if an invitation currently exists for the caller
+(to speak to the callee specified in the message).
+If the lookup fails,
+the caller then sends an
+.Tn ANNOUNCE
+message causing the server to
+broadcast an announcement on the callee's login ports requesting contact.
+When the callee responds, the local server uses the
+recorded invitation to respond with the appropriate rendezvous
+address and the caller and callee client programs establish a
+stream connection through which the conversation takes place.
+.Sh OPTIONS
+.Op Fl d
+Debug mode; writes copious logging and debugging information to 
+.Pa /var/log/talkd.log .
+.Pp
+.Op Fl p
+Packet logging mode; writes copies of malformed packets to
+.Pa /var/log/talkd.packets .
+This is useful for debugging interoperability problems.
+.Sh SEE ALSO
+.Xr talk 1 ,
+.Xr write 1
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.3 .