1.\" Copyright (c) 1983, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)talk.1 6.6 (Berkeley) 4/22/91 33.\" $Id: talk.1,v 1.2 1993/08/01 07:28:12 mycroft Exp $ 34.\" 35.Dd April 22, 1991 36.Dt TALK 1 37.Os BSD 4.2 38.Sh NAME 39.Nm talk 40.Nd talk to another user 41.Sh SYNOPSIS 42.Nm talk 43.Ar person 44.Op Ar ttyname 45.Sh DESCRIPTION 46.Nm Talk 47is a visual communication program which copies lines from your 48terminal to that of another user. 49.Pp 50Options available: 51.Bl -tag -width ttyname 52.It Ar person 53If you wish to talk to someone on your own machine, then 54.Ar person 55is just the person's login name. If you wish to talk to a user on 56another host, then 57.Ar person 58is of the form 59.Ql user@host . 60.It Ar ttyname 61If you wish to talk to a user who is logged in more than once, the 62.Ar ttyname 63argument may be used to indicate the appropriate terminal 64name, where 65.Ar ttyname 66is of the form 67.Ql ttyXX . 68.El 69.Pp 70When first called, 71.Nm talk 72sends the message 73.Bd -literal -offset indent -compact 74Message from TalkDaemon@his_machine... 75talk: connection requested by your_name@your_machine. 76talk: respond with: talk your_name@your_machine 77.Ed 78.Pp 79to the user you wish to talk to. At this point, the recipient 80of the message should reply by typing 81.Pp 82.Dl talk \ your_name@your_machine 83.Pp 84It doesn't matter from which machine the recipient replies, as 85long as his login-name is the same. Once communication is established, 86the two parties may type simultaneously, with their output appearing 87in separate windows. Typing control-L 88.Ql ^L 89will cause the screen to 90be reprinted, while your erase, kill, and word kill characters will 91behave normally. To exit, just type your interrupt character; 92.Nm talk 93then moves the cursor to the bottom of the screen and restores the 94terminal to its previous state. 95.Pp 96Permission to talk may be denied or granted by use of the 97.Xr mesg 1 98command. At the outset talking is allowed. Certain commands, in 99particular 100.Xr nroff 1 101and 102.Xr pr 1 , 103disallow messages in order to 104prevent messy output. 105.Pp 106.Sh FILES 107.Bl -tag -width /var/run/utmp -compact 108.It Pa /etc/hosts 109to find the recipient's machine 110.It Pa /var/run/utmp 111to find the recipient's tty 112.El 113.Sh SEE ALSO 114.Xr mail 1 , 115.Xr mesg 1 , 116.Xr who 1 , 117.Xr write 1 118.Sh BUGS 119The version of 120.Xr talk 1 121released with 122.Bx 4.3 123uses a protocol that 124is incompatible with the protocol used in the version released with 125.Bx 4.2 . 126.Sh HISTORY 127The 128.Nm 129command appeared in 130.Bx 4.2 . 131