1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. 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: @(#)getty.8 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD: src/libexec/getty/getty.8,v 1.10.2.3 2001/08/16 10:44:15 ru Exp $ 34.\" $DragonFly: src/libexec/getty/getty.8,v 1.4 2006/02/17 19:33:31 swildner Exp $ 35.\" " 36.Dd June 4, 1993 37.Dt GETTY 8 38.Os 39.Sh NAME 40.Nm getty 41.Nd set terminal mode 42.Sh SYNOPSIS 43.Nm 44.Oo 45.Ar type 46.Op Ar tty 47.Oc 48.Sh DESCRIPTION 49The 50.Nm 51program 52is called by 53.Xr init 8 54to open and initialize the tty line, read a login name, and invoke 55.Xr login 1 . 56.Pp 57The argument 58.Ar tty 59is the special device file in 60.Pa /dev 61to open for the terminal (for example, ``ttyh0''). 62If there is no argument or the argument is 63.Sq Fl , 64the tty line is assumed to be open as file descriptor 0. 65.Pp 66The 67.Ar type 68argument can be used to make 69.Nm 70treat the terminal line specially. 71This argument is used as an index into the 72.Xr gettytab 5 73database, to determine the characteristics of the line. 74If there is no argument, or there is no such table, the 75.Em default 76table is used. 77If there is no 78.Pa /etc/gettytab 79a set of system defaults is used. 80If indicated by the table located, 81.Nm 82will clear the terminal screen, 83print a banner heading, 84and prompt for a login name. 85Usually either the banner or the login prompt will include 86the system hostname. 87.Pp 88Most of the default actions of 89.Nm 90can be circumvented, or modified, by a suitable 91.Pa gettytab 92table. 93.Pp 94The 95.Nm 96program 97can be set to timeout after some interval, 98which will cause dial up lines to hang up 99if the login name is not entered reasonably quickly. 100.Sh FILES 101.Bl -tag -width /etc/gettytab -compact 102.It Pa /etc/gettytab 103.It Pa /etc/ttys 104.El 105.Sh DIAGNOSTICS 106.Bl -diag 107.It "ttyxx: No such device or address." 108.It "ttyxx: No such file or address." 109.Pp 110A terminal which is turned 111on in the 112.Pa ttys 113file cannot be opened, likely because the requisite 114lines are either not configured into the system, the associated device 115was not attached during boot-time system configuration, 116or the special file in 117.Pa /dev 118does not exist. 119.El 120.Sh SEE ALSO 121.Xr login 1 , 122.Xr ioctl 2 , 123.Xr tty 4 , 124.Xr gettytab 5 , 125.Xr ttys 5 , 126.Xr init 8 127.Sh HISTORY 128A 129.Nm 130program appeared in 131.At v6 . 132