1.\" $NetBSD: talk.1,v 1.7 2002/09/30 11:09:12 grant Exp $ 2.\" 3.\" Copyright (c) 1983, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)talk.1 8.1 (Berkeley) 6/6/93 35.\" 36.Dd June 6, 1993 37.Dt TALK 1 38.Os 39.Sh NAME 40.Nm talk 41.Nd talk to another user 42.Sh SYNOPSIS 43.Nm 44.Ar person 45.Op Ar ttyname 46.Sh DESCRIPTION 47.Nm 48is a visual communication program which copies lines from your 49terminal to that of another user. 50.Pp 51Options available: 52.Bl -tag -width ttyname 53.It Ar person 54If you wish to talk to someone on your own machine, then 55.Ar person 56is just the person's login name. 57If you wish to talk to a user on another host, then 58.Ar person 59is of the form 60.Ql user@host . 61.It Ar ttyname 62If you wish to talk to a user who is logged in more than once, the 63.Ar ttyname 64argument may be used to indicate the appropriate terminal 65name, where 66.Ar ttyname 67is of the form 68.Ql ttyXX . 69.El 70.Pp 71When first called, 72.Nm 73sends the message 74.Bd -literal -offset indent -compact 75Message from TalkDaemon@his_machine... 76talk: connection requested by your_name@your_machine. 77talk: respond with: talk your_name@your_machine 78.Ed 79.Pp 80to the user you wish to talk to. 81At this point, the recipient 82of the message should reply by typing 83.Pp 84.Dl talk \ your_name@your_machine 85.Pp 86It doesn't matter from which machine the recipient replies, as 87long as his login-name is the same. 88Once communication is established, 89the two parties may type simultaneously, with their output appearing 90in separate windows. 91Typing control-L 92.Ql ^L 93will cause the screen to 94be reprinted, while your erase, kill, and word kill characters will 95behave normally. 96To exit, just type your interrupt character; 97.Nm 98then moves the cursor to the bottom of the screen and restores the 99terminal to its previous state. 100.Pp 101Permission to talk may be denied or granted by use of the 102.Xr mesg 1 103command. 104At the outset talking is allowed. 105Certain commands, in 106particular 107.Xr nroff 1 108and 109.Xr pr 1 , 110disallow messages in order to 111prevent messy output. 112.Sh FILES 113.Bl -tag -width /var/run/utmp -compact 114.It Pa /etc/hosts 115to find the recipient's machine 116.It Pa /var/run/utmp 117to find the recipient's tty 118.El 119.Sh SEE ALSO 120.Xr mail 1 , 121.Xr mesg 1 , 122.Xr who 1 , 123.Xr write 1 124.Sh HISTORY 125The 126.Nm 127command appeared in 128.Bx 4.2 . 129.Sh BUGS 130The version of 131.Xr talk 1 132released with 133.Bx 4.3 134uses a protocol that 135is incompatible with the protocol used in the version released with 136.Bx 4.2 . 137