STTYDEFS(8) Maintenance Commands and Procedures STTYDEFS(8)

NAME

sttydefs - maintain line settings and hunt sequences for TTY ports

SYNOPSIS

/usr/sbin/sttydefs -a ttylabel [-b] [-f final-flags]
[-i initial-flags] [-n nextlabel]


/usr/sbin/sttydefs -l [ttylabel]


/usr/sbin/sttydefs -r ttylabel

DESCRIPTION

sttydefs is an administrative command that maintains the line
settings and hunt sequences for the system's TTY ports by making
entries in, and deleting entries from the /etc/ttydefs file.


sttydefs with a -a or -r option may be invoked only by the super-
user. sttydefs with -l may be invoked by any user on the system.

OPTIONS

The following options are supported:

-a ttylabel
Add a record to the ttydefs file, using ttylabel
as its label. The following describes the effect
of the -b, -n, -i, or -f options when used in
conjunction with the -a option:


-b
Enable autobaud. Autobaud allows the system to
set the line speed of a given TTY port to the
line speed of the device connected to the port
without the user's intervention.


-f final-flags
Specify the value to be used in the final-flags
field in /etc/ttydefs. final-flags must be in a
format recognized by the stty command. final-
flags are the termio(4I) settings used by ttymon
after receiving a successful connection request
and immediately before invoking the service on
the port. If this option is not specified,
sttydefs will set final-flags equal to the
termio(4I) flags 9600 and sane.


-i initial-flags
Specify the value to be used in the initial-flags
field in /etc/ttydefs. initial-flags must be in a
format recognized by the stty command. These
flags are used by ttymon when searching for the
correct baud rate. They are set prior to writing
the prompt. If this option is not specified,
sttydefs will set initial-flags equal to the
termio(4I) flag 9600.


-n nextlabel
Specify the value to be used in the nextlabel
field in /etc/ttydefs. If this option is not
specified, sttydefs will set nextlabel equal to
ttylabel.


-l[ttylabel]
If a ttylabel is specified, sttydefs displays the
record from /etc/ttydefs whose TTY label matches
the specified ttylabel. If no ttylabel is
specified, sttydefs displays the entire contents
of /etc/ttydefs. sttydefs verifies that each
entry it displays is correct and that the entry's
nextlabel field references an existing


-r ttylabel
Remove any record in the ttydefs file that has
ttylabel as its label.

OUTPUT

If successful, sttydefs will exit with a status of 0. sttydefs -l
will generate the requested information and send it to standard
output.

EXAMPLES

Example 1: A sample of sttydefs command.

The following command lists all the entries in the ttydefs file and
prints an error message for each invalid entry that is detected.


example# sttydefs -l


The following shows a command that requests information for a single
label and its output:


example# sttydefs -l 9600
------------------------------------------------------------------
9600:9600 hupcl erase ^h:9600 sane ixany tab3 hupcl erase ^h::4800
------------------------------------------------------------------
ttylabel: 9600
initial flags: 9600 hupcl erase ^h
final flags: 9600 sane ixany tab3 hupcl erase ^h
autobaud: no
nextlabel: 4800


The following sequence of commands will add the labels 1200, 2400,
4800, and 9600 and put them in a circular list:


sttydefs -a 1200 -n 2400 -i 1200 -f "1200 sane"
sttydefs -a 2400 -n 4800 -i 2400 -f "2400 sane"
sttydefs -a 4800 -n 9600 -i 4800 -f "4800 sane"
sttydefs -a 9600 -n 1200 -i 9600 -f "9600 sane"

FILES

/etc/ttydefs

SEE ALSO

termio(4I), attributes(7)

September 14, 1992 STTYDEFS(8)