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