|TTYS(5)||File Formats Manual||TTYS(5)|
ttys — terminal
ttys file contains information that is
used by various routines to initialize and control the use of terminal
special files. This information is read with the
routines. There is one line in the
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 newlines. Any unspecified
fields will default to null.
The first field is the name of the terminal special file as it is found in /dev.
The second field of the file is the command to execute for the line, usually getty(8), which initializes and opens the line, setting the speed, waiting for a user name and executing the 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.
The third field is the type of terminal usually connected to that
TTY line, normally the one found in the
termcap(5) database file.
The environment variable
TERM is initialized with
the value by either getty(8)
The remaining fields set flags in the ty_status entry (see getttyent(3)) or specify a window system process that init(8) will maintain for the terminal line. The following is a list of permitted flags for each TTY:
Additionally, the following flags modify the default behavior of the terminal line. Some of these flags may not be supported by a terminal line driver. The flag fields should not be quoted.
The string window= may be followed by a quoted command string which init(8) will execute before starting the command specified by the second field.
Changes to the ttys file take effect after it has been reloaded by
init(8), which can be triggered
by sending it a
# 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
ttys file appeared in
Version 6 AT&T UNIX.
|September 25, 2018||OpenBSD-6.5|