\" $NetBSD: talk.1,v 1.9 2007/01/08 17:10:59 christos Exp $
\"
\" Copyright (c) 1983, 1990, 1993
\" 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. 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.
\"
\" @(#)talk.1 8.1 (Berkeley) 6/6/93
\"
Dd January 7, 2007
Dt TALK 1
Os
Sh NAME
Nm talk
Nd talk to another user
Sh SYNOPSIS
Nm
Ar person
Op Ar ttyname
Sh DESCRIPTION
Nm
is a visual communication program which copies lines from your
terminal to that of another user.
Pp
Options available:
Bl -tag -width ttyname
It Ar person
If you wish to talk to someone on your own machine, then
Ar person
is just the person's login name.
If you wish to talk to a user on another host, then
Ar person
is of the form
Ql user@host .
It Ar ttyname
If you wish to talk to a user who is logged in more than once, the
Ar ttyname
argument may be used to indicate the appropriate terminal
name, where
Ar ttyname
is of the form
Ql ttyXX .
El
Pp
When first called,
Nm
sends the message
Bd -literal -offset indent -compact
Message from TalkDaemon@his_machine...
talk: connection requested by your_name@your_machine.
talk: respond with: talk your_name@your_machine
Ed
Pp
to the user you wish to talk to.
At this point, the recipient
of the message should reply by typing
Pp
Dl talk \ your_name@your_machine
Pp
It doesn't matter from which machine the recipient replies, as
long as his login-name is the same.
Once communication is established,
the two parties may type simultaneously, with their output appearing
in separate windows.
Typing control-L
Ql ^L
will cause the screen to
be reprinted, while your erase, kill, and word kill characters will
behave normally.
To exit, just type your interrupt character;
Nm
then moves the cursor to the bottom of the screen and restores the
terminal to its previous state.
Pp
Permission to talk may be denied or granted by use of the
Xr mesg 1
command.
At the outset talking is allowed.
Certain commands, in
particular
Xr nroff 1
and
Xr pr 1 ,
disallow messages in order to
prevent messy output.
Sh ENVIRONMENT
If the
Ev TALKHOST
environment variable is set, its value is used as the
Ar hostname
the
Nm
packets appear to be originating from.
This is useful if you wish to talk to someone on another machine and
your internal hostname does not resolve to the address of your
external interface as seen from the other machine.
Sh FILES
Bl -tag -width /var/run/utmp -compact
It Pa /etc/hosts
to find the recipient's machine
It Pa /var/run/utmp
to find the recipient's tty
El
Sh SEE ALSO
Xr mail 1 ,
Xr mesg 1 ,
Xr who 1 ,
Xr write 1
Sh HISTORY
The
Nm
command appeared in
Bx 4.2 .
Sh BUGS
The version of
Nm
released with
Bx 4.3
uses a protocol that
is incompatible with the protocol used in the version released with
Bx 4.2 .
