A/UX® System Administrator's Reference Sections 1M, 7, and 8

getty(IM) getty(IM)
2
none Default
vt61 DEC vt61
vt100 DEC vt100
c100 Concept 100
The default terminal is none, that is, any CRT or normal terminal
unknown to the system. Also, for the terminal type to have any
meaning, the virtual terminal handlers must be compiled into the
operating system. They are available, but not compiled, in the default
condition. The optional fourth argument, linedisc, is a character
string describing which line discipline to use in communicating
with the terminal. Again, the hooks for line disciplines are
available in the operating system, but only one is presently available,
the default line discipline LDISCO.
When given no optional arguments, getty sets the speed of the
interface to 300 baud, specifies that raw mode is to be used (awaken
on every character), that echo is to be suppressed, that either
parity is allowed, that newline characters are to be converted to
return-line feed, and that tab expansion be performed on the standard
output. It types the login message before reading the user's
name one character at a time. If a null character (or framing error)
is received, it is assumed to be the result of the user pushing the
"break" key. This will cause getty to attempt the next speed in
the series. The series that getty tries is determined by what it
finds in /etc/gettydefs.
The user's name is terminated by a newline or RETURN character.
The latter results in the system being set to treat RETURN characters
appropriately (see ioctl(2».
The user's name is scanned to see if it contains any lowercase alphabetic
characters; if not, and if the name is nonempty, the system
is told to map any future uppercase characters into the
corresponding lowercase characters.
In addition to the standard A/UX system erase and kill characters
(DELETE and CONTROL-U), getty also understands \b as an
erase. getty sets the standard erase character or kill character to
match.
getty also understands the "standard" ESS protocols for erasing,
killing, aborting, and terminating a line. If getty sees the
ESS erase character, ,or kill character, $, or abort character, &,
or the ESS line terminators, / or !, it arranges for this set of characters
to be used for these functions.
February, 1990
RevisionC