+.\" Copyright (c) 1985, 1991 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.
+.\"
+.\" @(#)ttys.5 6.8 (Berkeley) 5/4/91
+.\"
+.Dd May 4, 1991
+.Dt TTYS 5
+.Os
+.Sh NAME
+.Nm ttys
+.Nd terminal initialization information
+.Sh DESCRIPTION
+The file
+.Nm ttys
+contains information that is used by various routines to initialize
+and control the use of terminal special files.
+This information is read with the
+.Xr getttyent 3
+library routines.
+The
+There is one line in the
+.Nm ttys
+file per special device file.
+Fields are separated by tabs and/or spaces.
+Fields comprised of more than one word should be enclosed in double
+quotes (``"'').
+Blank lines and comments may appear anywhere in the file; comments
+are delimited by hash marks (``#'') and new lines.
+Any unspecified fields will default to null.
+.Pp
+The first field is the
+name of the terminal special file as it is found in
+.Pa /dev .
+.Pp
+The second field of the file is the command to execute for the line,
+usually
+.Xr getty 8 ,
+which initializes and opens the line, setting the speed, waiting for
+a user name and executing the
+.Xr login 1
+program.
+It can be, however, any desired command, for example
+the start up for a window system terminal emulator or some other
+daemon process, and can contain multiple words if quoted.
+.Pp
+The third field is the type of terminal usually connected to that
+tty line, normally the one found in the
+.Xr termcap 5
+data base file.
+The environment variable
+.Dv TERM
+is initialized with the value by
+either
+.Xr getty 8
+or
+.Xr login 1 .
+.Pp
+The remaining fields set flags in the
+.Fa ty_status
+entry (see
+.Xr getttyent 3 )
+or specify a window system process that
+.Xr init 8
+will maintain for the terminal line.
+.Pp
+As flag values, the strings ``on'' and ``off'' specify that
+.Xr init
+should (should not) execute the command given in the second field,
+while ``secure'' (if ``on'' is also specified) allows users with a
+uid of 0 to login on
+this line.
+These flag fields should not be quoted.
+.Pp
+The string ``window='' may be followed by a quoted command
+string which
+.Xr init
+will execute
+.Em before
+starting the command specified by the second field.
+.Sh EXAMPLES
+.Bd -literal
+# root login on console at 1200 baud
+console "/usr/libexec/getty std.1200" vt100 on secure
+# dialup at 1200 baud, no root logins
+ttyd0 "/usr/libexec/getty d1200" dialup on # 555-1234
+# Mike's terminal: hp2621
+ttyh0 "/usr/libexec/getty std.9600" hp2621-nl on # 457 Evans
+# John's terminal: vt100
+ttyh1 "/usr/libexec/getty std.9600" vt100 on # 459 Evans
+# terminal emulate/window system
+ttyv0 "/usr/new/xterm -L :0" vs100 on window="/usr/new/Xvs100 0"
+# Network pseudo ttys -- don't enable getty
+ttyp0 none network
+ttyp1 none network off
+.Ed
+.Sh FILES
+.Bl -tag -width /etc/ttys -compact
+.It Pa /etc/ttys
+.El
+.Sh SEE ALSO
+.Xr login 1 ,
+.Xr getttyent 3 ,
+.Xr ttyslot 3 ,
+.Xr gettytab 5 ,
+.Xr termcap 5 ,
+.Xr getty 8 ,
+.Xr init 8
+.Sh HISTORY
+A
+.Nm
+file appeared in
+.At v6 .
projects / unix-history / commitdiff