getty.1m (2010 09)

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getty(1M) getty(1M)

• If the respawn action is deﬁned for the device ﬁle in

/etc/inittab, init reruns the

getty command, and the process resumes at step 1 (see inittab (4)).

Special Control Characters

The

getty program uses special control characters to manage text input and to switch line speeds.

The default special control characters are shown in the following table.

Table 1: Default Special Control Characters

May Be Character, or ASCII Value

Name Quoted (ASCII Name; Key Names) Action

eof Yes ^D (EOT) Terminate getty

erase Yes # Erase previous character

intr No 127 (DEL; Delete) Erase entire input line

kill Yes @ Erase entire input line

quit No ^\ (FS) Terminate getty

break No \0 (NUL or framing error) Switch to next entry

lineend No ^J (NL; newline) Terminate input line

lineend No ^M (CR; carriage return) Terminate input line

quote Yes \ Quote next character

Changing Control Character Values

You can set different values for eof, erase, intr,

kill, quit, and some other terminal parameters by

modifying the

/dev/ttyconf ﬁle. A superuser may view and modify /dev/ttyconf with the stty

command. See stty (1) for details.

To use the values in

/dev/ttyconf, specify the -f option on the getty

command line.

Quoting

getty understands the single character quoting convention using the backslash (\) quote. This allows

you to include whitespace, some of the special control characters, and some of the general control charac-

ters, in the input line as ordinary text. You cannot quote the current values of the special control charac-

ter names that are marked "No" in the May Be Quoted column. The single and double quotation marks

(’ and ") have no special meaning (unless they are assigned in /dev/ttyconf).

DEPENDENCIES

HP2334 MultiMux

The modem control parameter

MRTS must be present in the /etc/gettydefs

ﬁle when using getty

in conjunction with an HP2334 or HP2335 MultiMux to ensure that the RTS modem control signal is

asserted correctly.

Example:

9600 # B9600 HUPCL PARENB

MRTS

# B9600 SANE PARENB ISTRIP IXANY

#login: #19200

MRTS is not intended for use with devices other than the HP2334 or HP2335 MultiMux.

FILES

/dev/ttyconf

/etc/gettydefs

/etc/issue