131 lines
3.8 KiB
Groff
131 lines
3.8 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" 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.
|
|
.\"
|
|
.\" from: @(#)getty.8 8.1 (Berkeley) 6/4/93
|
|
.\" $FreeBSD$
|
|
.\" "
|
|
.Dd June 4, 1993
|
|
.Dt GETTY 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm getty
|
|
.Nd set terminal mode
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Oo
|
|
.Ar type
|
|
.Op Ar tty
|
|
.Oc
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
program
|
|
is called by
|
|
.Xr init 8
|
|
to open and initialize the tty line, read a login name, and invoke
|
|
.Xr login 1 .
|
|
.Pp
|
|
The argument
|
|
.Ar tty
|
|
is the special device file in
|
|
.Pa /dev
|
|
to open for the terminal (for example, ``ttyh0'').
|
|
If there is no argument or the argument is
|
|
.Ql Fl ,
|
|
the tty line is assumed to be open as file descriptor 0.
|
|
.Pp
|
|
The
|
|
.Ar type
|
|
argument can be used to make
|
|
.Nm
|
|
treat the terminal line specially.
|
|
This argument is used as an index into the
|
|
.Xr gettytab 5
|
|
database, to determine the characteristics of the line.
|
|
If there is no argument, or there is no such table, the
|
|
.Em default
|
|
table is used.
|
|
If there is no
|
|
.Pa /etc/gettytab
|
|
a set of system defaults is used.
|
|
If indicated by the table located,
|
|
.Nm
|
|
will clear the terminal screen,
|
|
print a banner heading,
|
|
and prompt for a login name.
|
|
Usually either the banner or the login prompt will include
|
|
the system hostname.
|
|
.Pp
|
|
Most of the default actions of
|
|
.Nm
|
|
can be circumvented, or modified, by a suitable
|
|
.Pa gettytab
|
|
table.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
program
|
|
can be set to timeout after some interval,
|
|
which will cause dial up lines to hang up
|
|
if the login name is not entered reasonably quickly.
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It "ttyxx: No such device or address."
|
|
.It "ttyxx: No such file or address."
|
|
.Pp
|
|
A terminal which is turned
|
|
on in the
|
|
.Pa ttys
|
|
file cannot be opened, likely because the requisite
|
|
lines are either not configured into the system, the associated device
|
|
was not attached during boot-time system configuration,
|
|
or the special file in
|
|
.Pa /dev
|
|
does not exist.
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width /etc/gettytab -compact
|
|
.It Pa /etc/gettytab
|
|
.It Pa /etc/ttys
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr login 1 ,
|
|
.Xr ioctl 2 ,
|
|
.Xr tty 4 ,
|
|
.Xr gettytab 5 ,
|
|
.Xr ttys 5 ,
|
|
.Xr init 8
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
program appeared in
|
|
.At v6 .
|