@(#)ttys.5 6.1 (Berkeley) 05/15/85
TTYS 5 ""
.AT 3
NAME
ttys - terminal initialization data
DESCRIPTION
The
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
getttyent (3) library routines.
There is one line in the
ttys file per special file.
Fields are separated by tabs and/or spaces.
A field of more than one word may be enclosed by quotes.
Blank lines and comments can appear anywhere in the file; comments
are delimited by `#' and new line. Unspecified fields default to
the empty string or zero as appropriate.
The first field is the terminal's entry in the device directory, /dev.
The second field of the file is the command to execute for the line,
typically
getty (8), which performs such tasks as baud-rate recognition, reading the login name,
and calling
login (1). It can be, however, any command you wish, for example
the start up for a window system terminal emulator or maintain other
daemon processes.
The third field is the type of terminal normally connected to the
terminal special file as found in the
termcap (5) data base file.
The remaining fields are flags to be set in the
ty_status entry (see
getttyent (3)) or for a window system process indicated by
the "window" keyword that
init(8) will maintain for the terminal line.
If the line ends in a comment, the comment is included in the
ty_comment field of the ttyent structure.
Some examples:
console "/etc/getty std.1200" vt100 on secure ttyd0 "/etc/getty d1200" dialup on ttyh0 "/etc/getty std.9600" hp2621-nl on ttyh1 "/etc/getty std.9600" plugboard on ttyp0 none network ttyp1 none network off ttyv0 "/etc/xpty -L :0" vs100 on window="/etc/X 0"
The first example permits root login on the console at 1200 baud, the second allows dialup at 1200 baud without root login, the third and fourth allow login at 9600 baud with terminal types of "hp2621-nl" and "plugboard" respectively, the fifth and sixth line are examples of network pseudo ttys, which should not have getty enabled on them, and the last example shows a terminal emulator and window system startup entry.
FILES
/etc/ttys
"SEE ALSO"
getttyent(3), gettytab(5), init(8), getty(8), login(1)