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32 .\" from: @(#)ttys.5 8.1 (Berkeley) 6/4/93
33 .\" $FreeBSD: src/libexec/getty/ttys.5,v 1.11.2.3 2001/08/16 10:44:15 ru Exp $
34 .\" $DragonFly: src/libexec/getty/ttys.5,v 1.3 2006/02/17 19:33:31 swildner Exp $
41 .Nd terminal initialization information
45 contains information that is used by various routines to initialize
46 and control the use of terminal special files.
47 This information is read with the
50 There is one line in the
52 file per special device file.
53 Fields are separated by tabs and/or spaces.
54 Fields comprised of more than one word should be enclosed in double
56 Blank lines and comments may appear anywhere in the file; comments
57 are delimited by hash marks (``#'') and new lines.
58 Any unspecified fields will default to null.
60 The first field is normally the
61 name of the terminal special file as it is found in
63 However, it can be any arbitrary string
64 when the associated command is not related to a tty.
66 The second field of the file is the command to execute for the line,
69 which initializes and opens the line, setting the speed, waiting for
70 a user name and executing the
73 It can be, however, any desired command, for example
74 the start up for a window system terminal emulator or some other
75 daemon process, and can contain multiple words if quoted.
77 The third field is the type of terminal usually connected to that
78 tty line, normally the one found in the
81 The environment variable
83 is initialized with the value by
89 The remaining fields set flags in the
93 specify a window system process that
95 will maintain for the terminal line, optionally determine the
96 type of tty (whether dialin, network or otherwise),
97 or specify a tty group
98 name that allows the login class database (see
100 to refer to many ttys as a group, to selectively allow or
101 deny access or enable or disable accounting facilities for
104 As flag values, the strings ``on'' and ``off'' specify that
106 should (should not) execute the command given in the second field,
107 while ``secure'' (if ``on'' is also specified) allows users with a
110 The flag ``dialin'' indicates that a tty entry describes a dialin
111 line, and ``network'' indicates that a tty entry provides a
113 Either of these strings may also be specified in the terminal type
115 The string ``window='' may be followed by a quoted command
120 starting the command specified by the second field.
122 The string ``group='' may be followed by a group name comprised of
123 alphanumeric characters that can be used by
125 to refer to many tty lines as a group to enable or disable access
126 and accounting facilities.
127 If no group is specified, then the tty becomes a member of the group
129 For backwards compatibility, the ``group='' should appear last on the
130 line, immediately before the optional comment.
132 Both the second field and any command specified with ``window=''
133 will be split into words and executed using
135 Words are separated by any combinations of tabs and spaces.
136 Arguments containing whitespace should be enclosed in single quotes
138 Note that no shell-style globbing or other variable substitution occurs.
140 .Bl -tag -width /etc/ttys -compact
145 # root login on console at 1200 baud
146 console "/usr/libexec/getty std.1200" vt100 on secure
147 # dialup at 1200 baud, no root logins
148 ttyd0 "/usr/libexec/getty d1200" dialup on group=dialup # 555-1234
149 # Mike's terminal: hp2621
150 ttyh0 "/usr/libexec/getty std.9600" hp2621-nl on group=dialup # 457 Evans
151 # John's terminal: vt100
152 ttyh1 "/usr/libexec/getty std.9600" vt100 on group=dialup # 459 Evans
153 # terminal emulate/window system
154 ttyv0 "/usr/new/xterm -L :0" vs100 on window="/usr/new/Xvs100 0"
155 # Network pseudo ttys -- don't enable getty
156 ttyp0 none network group=pty
157 ttyp1 none network off group=pty