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 an interrupt character.
Each entry in /etc/gettydefs has the following format:
label# initial-flags # final-flags # flow-control # 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, and so
on, 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 flags SANE
or SANE2 take 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. Flag
attributes are added from left to right; flags that
start with a ~ are subtracted, such as SANE ~PARENB.
January 1992 1
gettydefs(4) gettydefs(4)
This field specifies what type of flow control to use
on the line. The currently allowed settings are APPLE
(for apple flow control), DTR (for DTR flow control),
MODEM (for modem control), and FLOW (for hardware flow
control). These modes can also be turned off by using
the ~ as a prefix.
login-prompt
This entire field is printed as the login-prompt.
Unlike the above fields where white space is ignored (a
space, tab, or newline), 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
that 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.
The following four symbols define the SANE state.
# define ISANE (BRKINT | IGNPAR | ISTRIP | ICRNL | IXON)
# define OSANE (OPOST | ONLCR)
# define CSANE (CS7 | PARENB | CREAD)
# define LSANE (ISIG | ICANON | ECHO | ECHOK)
FILES
/etc/gettydefs
File containing getty definitions
SEE ALSO
ioctl(2), termio(7)
login(1) in A/UX Command Reference
2 January 1992
getty(1M) in A/UX System Administrator's Reference
January 1992 3