1 .\" Copyright (c) 1985, 1991, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
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.
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
33 .Nd terminal initialization information
37 contains information that is used by various routines to initialize
38 and control the use of terminal special files.
42 This information is read with the
45 There is one line in the
47 file per special device file.
48 Fields are separated by tabs and/or spaces.
49 Fields comprised of more than one word should be enclosed in double
51 Blank lines and comments may appear anywhere in the file; comments
52 are delimited by hash marks (``#'') and new lines.
53 Any unspecified fields will default to null.
55 The first field is normally the
56 name of the terminal special file as it is found in
58 However, it can be any arbitrary string
59 when the associated command is not related to a tty.
61 The second field of the file is the command to execute for the line,
64 which initializes and opens the line, setting the speed, waiting for
65 a user name and executing the
68 It can be, however, any desired command, for example
69 the start up for a window system terminal emulator or some other
70 daemon process, and can contain multiple words if quoted.
72 The third field is the type of terminal usually connected to that
73 tty line, normally the one found in the
76 The environment variable
78 is initialized with the value by
84 The remaining fields set flags in the
88 specify a window system process that
90 will maintain for the terminal line, optionally determine the
91 type of tty (whether dialin, network or otherwise),
92 or specify a tty group
93 name that allows the login class database (see
95 to refer to many ttys as a group, to selectively allow or
96 deny access or enable or disable accounting facilities for
99 As flag values, the strings ``on'' and ``off'' specify that
101 should (should not) execute the command given in the second field.
102 ``onifconsole'' will cause this line to be enabled if and only if it is
103 an active kernel console device (it is equivalent to ``on'' in this
105 The flag ``onifexists'' will cause this line to be enabled if and only
107 If the name starts with a ``/'', it will be considered an absolute
109 Otherwise, it is considered a path relative to
111 The flag ``secure'' (if the console is enabled) allows users with a
112 uid of 0 to login on this line.
113 The flag ``insecure'' as well as the absence of the ``secure'' flag
114 disallows users with uid of 0 to login on this line.
115 The flag ``dialup'' indicates that a tty entry describes a dialin
116 line, and ``network'' is obsolete and does nothing.
117 Either of these strings may also be specified in the terminal type
119 The string ``window='' may be followed by a quoted command
124 starting the command specified by the second field.
126 The string ``group='' may be followed by a group name comprised of
127 alphanumeric characters that can be used by
129 to refer to many tty lines as a group to enable or disable access
130 and accounting facilities.
131 If no group is specified, then the tty becomes a member of the group
133 For backwards compatibility, the ``group='' should appear last on the
134 line, immediately before the optional comment.
136 Both the second field and any command specified with ``window=''
137 will be split into words and executed using
139 Words are separated by any combinations of tabs and spaces.
140 Arguments containing whitespace should be enclosed in single quotes
142 Note that no shell-style globbing or other variable substitution occurs.
144 .Bl -tag -width /etc/ttys -compact
149 # root login on console at 1200 baud
150 console "/usr/libexec/getty std.1200" vt100 on secure
151 # dialup at 1200 baud, no root logins
152 ttyd0 "/usr/libexec/getty d1200" dialup on group=dialup # 555-1234
153 # Mike's terminal: hp2621
154 ttyh0 "/usr/libexec/getty std.9600" hp2621-nl on group=dialup # 457 Evans
155 # John's terminal: vt100
156 ttyh1 "/usr/libexec/getty std.9600" vt100 on group=dialup # 459 Evans
157 # terminal emulate/window system
158 ttyv0 "/usr/local/bin/xterm -display :0" xterm on window="/usr/local/bin/X :0"
171 .Xr pam_securetty 8 ,