Sun Microsystems Sun Workstation 100U System Manager's Manual page 190

GETTY(8)
MAINTENANCE COMMANDS GETTY(8)
NAME
getty - set terminal mode
SYNOPSIS
Jete/getty
I
char)
DESCRIPTION
Getty is invoked by
inU(8) immediately after a terminal is opened, following the making of a con-
nection. While reading the name getty attempts to adapt the system to the speed and type of ter-
minal being used.
Init calls getty with an argument specified by the tty8 file entry for the terminal line. Arguments
other than '0' can be used to make getty treat the line specially. Refer to ttys(5) and gettytah(5)
for descriptions of how getty uses the data in gettytah to set up the terminal. Normally, it sets the
speed of the interrace to 300 baud, specifies that raw mode is to be used (break on every charac-
ter), that echo is to be suppressed,' and either parity allowed. It types a banner identifying the
system (from gethostname(2)) and the 'login:' message. Then the user's name is read, a character
at a time. If a null character is received, it is assumed to be the result of the user pushing the
'brea.k' ('interrupt') key. The speed is then changed to 1200 baud and the 'login:' is typed again;
a second 'break' changes the speed to 150 baud and the 'login:' is typed again. Successive 'break'
characters cycle through the speeds 300, 1200, and 150 baud.
The user's name is terminated by a new-line or carriage-return character. The latter results in
the system being set to treat carriage returns appropriately (see tty(4)).
The user's name is scanned to see if it contains any lower-case alphabetic characters; if not, and if
the name is nonempty, the system is told to map any future upper-case characters into the
corresponding lower-case characters.
Finally, login is called with the user's name as argument.
SEE ALSO
init(8), 10gin(I), ioctl(2), tty(4), ttys(5), gettytab(5)
Sun Release 1.1 Last change:
28
October 1983 35