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. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" from: @(#)getty.8 8.1 (Berkeley) 6/4/93 29.\" $FreeBSD: src/libexec/getty/getty.8,v 1.10.2.3 2001/08/16 10:44:15 ru Exp $ 30.\" $DragonFly: src/libexec/getty/getty.8,v 1.4 2006/02/17 19:33:31 swildner Exp $ 31.\" " 32.Dd June 4, 1993 33.Dt GETTY 8 34.Os 35.Sh NAME 36.Nm getty 37.Nd set terminal mode 38.Sh SYNOPSIS 39.Nm 40.Oo 41.Ar type 42.Op Ar tty 43.Oc 44.Sh DESCRIPTION 45The 46.Nm 47program 48is called by 49.Xr init 8 50to open and initialize the tty line, read a login name, and invoke 51.Xr login 1 . 52.Pp 53The argument 54.Ar tty 55is the special device file in 56.Pa /dev 57to open for the terminal (for example, ``ttyh0''). 58If there is no argument or the argument is 59.Sq Fl , 60the tty line is assumed to be open as file descriptor 0. 61.Pp 62The 63.Ar type 64argument can be used to make 65.Nm 66treat the terminal line specially. 67This argument is used as an index into the 68.Xr gettytab 5 69database, to determine the characteristics of the line. 70If there is no argument, or there is no such table, the 71.Em default 72table is used. 73If there is no 74.Pa /etc/gettytab 75a set of system defaults is used. 76If indicated by the table located, 77.Nm 78will clear the terminal screen, 79print a banner heading, 80and prompt for a login name. 81Usually either the banner or the login prompt will include 82the system hostname. 83.Pp 84Most of the default actions of 85.Nm 86can be circumvented, or modified, by a suitable 87.Pa gettytab 88table. 89.Pp 90The 91.Nm 92program 93can be set to timeout after some interval, 94which will cause dial up lines to hang up 95if the login name is not entered reasonably quickly. 96.Sh FILES 97.Bl -tag -width /etc/gettytab -compact 98.It Pa /etc/gettytab 99.It Pa /etc/ttys 100.El 101.Sh DIAGNOSTICS 102.Bl -diag 103.It "ttyxx: No such device or address." 104.It "ttyxx: No such file or address." 105.Pp 106A terminal which is turned 107on in the 108.Pa ttys 109file cannot be opened, likely because the requisite 110lines are either not configured into the system, the associated device 111was not attached during boot-time system configuration, 112or the special file in 113.Pa /dev 114does not exist. 115.El 116.Sh SEE ALSO 117.Xr login 1 , 118.Xr ioctl 2 , 119.Xr tty 4 , 120.Xr gettytab 5 , 121.Xr ttys 5 , 122.Xr init 8 123.Sh HISTORY 124A 125.Nm 126program appeared in 127.At v6 . 128