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 50program 51is called by 52.Xr init 8 53to open and initialize the tty line, read a login name, and invoke 54.Xr login 1 . 55.Pp 56The argument 57.Ar tty 58is the special device file in 59.Pa /dev 60to open for the terminal (for example, ``ttyh0''). 61If there is no argument or the argument is 62.Ql Fl , 63the tty line is assumed to be open as file descriptor 0. 64.Pp 65The 66.Ar type 67argument can be used to make 68.Nm 69treat the terminal line specially. 70This argument is used as an index into the 71.Xr gettytab 5 72database, to determine the characteristics of the line. 73If there is no argument, or there is no such table, the 74.Em default 75table is used. 76If there is no 77.Pa /etc/gettytab 78a set of system defaults is used. 79If indicated by the table located, 80.Nm 81will clear the terminal screen, 82print a banner heading, 83and prompt for a login name. 84Usually either the banner or the login prompt will include 85the system hostname. 86.Pp 87Most of the default actions of 88.Nm 89can be circumvented, or modified, by a suitable 90.Pa gettytab 91table. 92.Pp 93The 94.Nm 95program 96can be set to timeout after some interval, 97which will cause dial up lines to hang up 98if the login name is not entered reasonably quickly. 99.Sh DIAGNOSTICS 100.Bl -diag 101.It "ttyxx: No such device or address." 102.It "ttyxx: No such file or address." 103.Pp 104A terminal which is turned 105on in the 106.Pa ttys 107file cannot be opened, likely because the requisite 108lines are either not configured into the system, the associated device 109was not attached during boot-time system configuration, 110or the special file in 111.Pa /dev 112does not exist. 113.El 114.Sh FILES 115.Bl -tag -width /etc/gettytab -compact 116.It Pa /etc/gettytab 117.It Pa /etc/ttys 118.El 119.Sh SEE ALSO 120.Xr login 1 , 121.Xr ioctl 2 , 122.Xr tty 4 , 123.Xr gettytab 5 , 124.Xr ttys 5 , 125.Xr init 8 126.Sh HISTORY 127A 128.Nm 129program appeared in 130.At v6 . 131