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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. 15.\" 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 26.\" SUCH DAMAGE. 27.\" 28.\" from: @(#)ttys.5 8.1 (Berkeley) 6/4/93 29.\" $FreeBSD: src/libexec/getty/ttys.5,v 1.11.2.3 2001/08/16 10:44:15 ru Exp $ 30.\" $DragonFly: src/libexec/getty/ttys.5,v 1.3 2006/02/17 19:33:31 swildner Exp $ 31.\" " 32.Dd November 17, 1996 33.Dt TTYS 5 34.Os 35.Sh NAME 36.Nm ttys 37.Nd terminal initialization information 38.Sh DESCRIPTION 39The file 40.Nm 41contains information that is used by various routines to initialize 42and control the use of terminal special files. 43This information is read with the 44.Xr getttyent 3 45library routines. 46There is one line in the 47.Nm 48file per special device file. 49Fields are separated by tabs and/or spaces. 50Fields comprised of more than one word should be enclosed in double 51quotes (``"''). 52Blank lines and comments may appear anywhere in the file; comments 53are delimited by hash marks (``#'') and new lines. 54Any unspecified fields will default to null. 55.Pp 56The first field is normally the 57name of the terminal special file as it is found in 58.Pa /dev . 59However, it can be any arbitrary string 60when the associated command is not related to a tty. 61.Pp 62The second field of the file is the command to execute for the line, 63usually 64.Xr getty 8 , 65which initializes and opens the line, setting the speed, waiting for 66a user name and executing the 67.Xr login 1 68program. 69It can be, however, any desired command, for example 70the start up for a window system terminal emulator or some other 71daemon process, and can contain multiple words if quoted. 72.Pp 73The third field is the type of terminal usually connected to that 74tty line, normally the one found in the 75.Xr termcap 5 76data base file. 77The environment variable 78.Ev TERM 79is initialized with the value by 80either 81.Xr getty 8 82or 83.Xr login 1 . 84.Pp 85The remaining fields set flags in the 86.Fa ty_status 87entry (see 88.Xr getttyent 3 ) , 89specify a window system process that 90.Xr init 8 91will maintain for the terminal line, optionally determine the 92type of tty (whether dialin, network or otherwise), 93or specify a tty group 94name that allows the login class database (see 95.Xr login.conf 5 ) 96to refer to many ttys as a group, to selectively allow or 97deny access or enable or disable accounting facilities for 98ttys as a group. 99.Pp 100As flag values, the strings ``on'' and ``off'' specify that 101.Xr init 8 102should (should not) execute the command given in the second field, 103while ``secure'' (if ``on'' is also specified) allows users with a 104uid of 0 to login on 105this line. 106The flag ``ifconsole'' disables the tty entry if it is not the console. 107That is, you can construct a tty entry, set to 'on', that you intend to 108only be active if that tty is the console. 109The flag ``dialup'' indicates that a tty entry describes a dialup 110line, and ``network'' indicates that a tty entry provides a 111network connection. 112Either of these strings may also be specified in the terminal type 113field. 114The string ``window='' may be followed by a quoted command 115string which 116.Xr init 8 117will execute 118.Em before 119starting the command specified by the second field. 120.Pp 121The string ``group='' may be followed by a group name comprised of 122alphanumeric characters that can be used by 123.Xr login.conf 5 124to refer to many tty lines as a group to enable or disable access 125and accounting facilities. 126If no group is specified, then the tty becomes a member of the group 127"none". 128For backwards compatibility, the ``group='' should appear last on the 129line, immediately before the optional comment. 130.Pp 131Both the second field and any command specified with ``window='' 132will be split into words and executed using 133.Xr execve 2 . 134Words are separated by any combinations of tabs and spaces. 135Arguments containing whitespace should be enclosed in single quotes 136.Pq Li ' . 137Note that no shell-style globbing or other variable substitution occurs. 138.Sh FILES 139.Bl -tag -width /etc/ttys -compact 140.It Pa /etc/ttys 141.El 142.Sh EXAMPLES 143.Bd -literal 144# root login on console at 1200 baud 145console "/usr/libexec/getty std.1200" vt100 on secure 146# dialup at 1200 baud, no root logins 147ttyd0 "/usr/libexec/getty d1200" dialup on group=dialup # 555-1234 148# Mike's terminal: hp2621 149ttyh0 "/usr/libexec/getty std.9600" hp2621-nl on group=dialup # 457 Evans 150# John's terminal: vt100 151ttyh1 "/usr/libexec/getty std.9600" vt100 on group=dialup # 459 Evans 152# terminal emulate/window system 153ttyv0 "/usr/new/xterm -L :0" vs100 on window="/usr/new/Xvs100 0" 154# Network pseudo ttys -- don't enable getty 155ttyp0 none network group=pty 156ttyp1 none network off group=pty 157.Ed 158.Sh SEE ALSO 159.Xr login 1 , 160.Xr getttyent 3 , 161.Xr ttyslot 3 , 162.Xr gettytab 5 , 163.Xr login.conf 5 , 164.Xr termcap 5 , 165.Xr getty 8 , 166.Xr init 8 167.\".Xr init 8 , 168.\".Xr ttyflags 8 169.Sh HISTORY 170A 171.Nm 172file appeared in 173.At v6 . 174