GETTYDEFS(4) GETTYDEFS(4)
NAME
gettydefs - speed and terminal settings used by getty
DESCRIPTION
The /etc/gettydefs file contains information used by
getty(1M) to set up the speed and terminal settings for a
line. It supplies information on what the login prompt
should look like. It also supplies the speed to try next if
the user indicates the current speed is not correct by
typing a <break> character.
Each entry in /etc/gettydefs has the following format:
label# initial-flags # final-flags # login-prompt
#next-label
Each entry is followed by a blank line. The various fields
can contain quoted characters of the form \b, \n, \c, etc.,
as well as \nnn, where nnn is the octal value of the desired
character. The various fields are:
label This is the string against which getty tries
to match its second argument. It is often
the speed, such as 1200, at which the
terminal is supposed to run, but it need not
be (see below).
initial-flags These flags are the initial ioctl(2) settings
to which the terminal is to be set if a
terminal type is not specified to getty. The
flags that getty understands are the same as
the ones listed in /usr/include/sys/termio.h
[see termio(7)]. Normally only the speed
flag is required in the initial-flags. Getty
automatically sets the terminal to raw input
mode and takes care of most of the other
flags. The initial-flag settings remain in
effect until getty executes login(1).
final-flags These flags take the same values as the
initial-flags and are set just prior to getty
executes login. The speed flag is again
required. The composite flag SANE takes care
of most of the other flags that need to be
set so that the processor and terminal are
communicating in a rational fashion. The
other two commonly specified final-flags are
TAB3, so that tabs are sent to the terminal
as spaces, and HUPCL, so that the line is
hung up on the final close.
login-prompt This entire field is printed as the login-
Page 1 (last mod. 8/20/87)
GETTYDEFS(4) GETTYDEFS(4)
prompt.
Unlike the above fields where white space is
ignored (a space, tab or new-line), they are
included in the login-prompt field.
next-label If this entry does not specify the desired
speed, indicated by the user typing a <break>
character, then getty will search for the
entry with next-label as its label field and
set up the terminal for those settings.
Usually, a series of speeds are linked
together in this fashion, into a closed set;
For instance, 2400 linked to 1200, which in
turn is linked to 300, which finally is
linked to 2400.
If getty is called without a second argument, then the first
entry of /etc/gettydefs is used, thus making the first entry
of /etc/gettydefs the default entry. It is also used if
getty can not find the specified label. If /etc/gettydefs
itself is missing, there is one entry built into the command
which will bring up a terminal at 300 baud.
It is strongly recommended that after making or modifying
/etc/gettydefs, it be run through getty with the check
option to be sure there are no errors.
FILES
/etc/gettydefs
SEE ALSO
ioctl(2).
getty(1M), termio(7) in the System Administrator's Reference
Manual.
login(1) in the User's Reference Manual.
ORIGIN
AT&T V.3
Page 2 (last mod. 8/20/87)