[unix-history] / usr / src / usr.bin / talk / talk.1

.\" Copyright (c) 1983, 1990 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	6.6 (Berkeley) 4/22/91
.\"
.Dd April 22, 1991
.Dt TALK 1
.Os BSD 4.2
.Sh NAME
.Nm talk
.Nd talk to another user
.Sh SYNOPSIS
.Nm talk
.Ar person
.Op Ar ttyname
.Sh DESCRIPTION
.Nm Talk
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 talk
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 talk
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.
.Pp
.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 BUGS
The version of
.Xr talk 1
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 .
Commit	Line	Data
3c5a767d WJ	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	.\" @(#)talk.1 6.6 (Berkeley) 4/22/91
	33	.\"
	34	.Dd April 22, 1991
	35	.Dt TALK 1
	36	.Os BSD 4.2
	37	.Sh NAME
	38	.Nm talk
	39	.Nd talk to another user
	40	.Sh SYNOPSIS
	41	.Nm talk
	42	.Ar person
	43	.Op Ar ttyname
	44	.Sh DESCRIPTION
	45	.Nm Talk
	46	is a visual communication program which copies lines from your
	47	terminal to that of another user.
	48	.Pp
	49	Options available:
	50	.Bl -tag -width ttyname
	51	.It Ar person
	52	If you wish to talk to someone on your own machine, then
	53	.Ar person
	54	is just the person's login name. If you wish to talk to a user on
	55	another host, then
	56	.Ar person
	57	is of the form
	58	.Ql user@host .
	59	.It Ar ttyname
	60	If you wish to talk to a user who is logged in more than once, the
	61	.Ar ttyname
	62	argument may be used to indicate the appropriate terminal
	63	name, where
	64	.Ar ttyname
65	is of the form
66	.Ql ttyXX .
67	.El
68	.Pp
69	When first called,
70	.Nm talk
71	sends the message
72	.Bd -literal -offset indent -compact
73	Message from TalkDaemon@his_machine...
74	talk: connection requested by your_name@your_machine.
75	talk: respond with: talk your_name@your_machine
76	.Ed
77	.Pp
78	to the user you wish to talk to. At this point, the recipient
79	of the message should reply by typing
80	.Pp
81	.Dl talk \ your_name@your_machine
82	.Pp
83	It doesn't matter from which machine the recipient replies, as
84	long as his login-name is the same. Once communication is established,
85	the two parties may type simultaneously, with their output appearing
86	in separate windows. Typing control-L
87	.Ql ^L
88	will cause the screen to
89	be reprinted, while your erase, kill, and word kill characters will
90	behave normally. To exit, just type your interrupt character;
91	.Nm talk
92	then moves the cursor to the bottom of the screen and restores the
93	terminal to its previous state.
94	.Pp
95	Permission to talk may be denied or granted by use of the
96	.Xr mesg 1
97	command. At the outset talking is allowed. Certain commands, in
98	particular
99	.Xr nroff 1
100	and
101	.Xr pr 1 ,
102	disallow messages in order to
103	prevent messy output.
104	.Pp
105	.Sh FILES
106	.Bl -tag -width /var/run/utmp -compact
107	.It Pa /etc/hosts
108	to find the recipient's machine
109	.It Pa /var/run/utmp
110	to find the recipient's tty
111	.El
112	.Sh SEE ALSO
113	.Xr mail 1 ,
114	.Xr mesg 1 ,
115	.Xr who 1 ,
116	.Xr write 1
117	.Sh BUGS
118	The version of
119	.Xr talk 1
120	released with
121	.Bx 4.3
122	uses a protocol that
123	is incompatible with the protocol used in the version released with
124	.Bx 4.2 .
125	.Sh HISTORY
126	The
127	.Nm
128	command appeared in
129	.Bx 4.2 .