162 lines
4.6 KiB
Groff
162 lines
4.6 KiB
Groff
.\" 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. 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.
|
|
.\"
|
|
.\" @(#)talk.1 8.1 (Berkeley) 6/6/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd June 6, 1993
|
|
.Dt TALK 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm talk
|
|
.Nd talk to another user
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Ar person
|
|
.Op Ar ttyname
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility 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
|
|
or
|
|
.Ql host!user
|
|
or
|
|
.Ql host:user .
|
|
.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.
|
|
Typing control-D
|
|
.Ql ^D
|
|
will clear both parts of your screen to be cleared, while
|
|
the control-D character will be sent to the remote side
|
|
(and just displayed by this
|
|
.Nm
|
|
client).
|
|
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.
|
|
.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 wall 1 ,
|
|
.Xr who 1 ,
|
|
.Xr write 1 ,
|
|
.Xr talkd 8
|
|
.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 .
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.2 .
|
|
.Pp
|
|
In
|
|
.Fx 5.3 ,
|
|
the default behaviour of
|
|
.Nm
|
|
was changed to treat local-to-local talk requests as originating
|
|
and terminating at
|
|
.Em localhost .
|
|
Before this change, it was required that the hostname (as per
|
|
.Xr gethostname 3 )
|
|
resolved to a valid IPv4 address (via
|
|
.Xr gethostbyname 3 ) ,
|
|
making
|
|
.Nm
|
|
unsuitable for use in configurations where
|
|
.Xr talkd 8
|
|
was bound to the loopback interface (normally for security reasons).
|