stty

stty [options] [modes]

Set terminal I/O options for the current device. Without options, stty reports the terminal settings, where a ^ indicates the CONTROL key and ^` indicates a null value. Most modes can be switched using an optional - (shown in brackets). The corresponding description is also shown in brackets. As a privileged user, you can set or read settings from another device using the syntax:

stty [options] [modes] < device

Options

-a

Report all option settings.

-g

Report current settings.

control modes

0

Hang up phone.

n

Set terminal baud rate to n (e.g., 2400).

[-]clocal

[Enable]disable modem control.

[-]cread

[Disable]enable the receiver.

csn

Select character size (5-8).

[-]cstopb

[One]two stop bits per character.

[-]hup

[Do not]hang up connection on last close.

[-]hupcl

Same as previous.

ispeed n

Set terminal input baud rate to n.

[-]loblk

[Do not]block layer output.

ospeed n

Set terminal output baud rate to n.

[-]parenb

[Disable]enable parity generation and detection.

[-]parext

[Disable]enable extended parity generation and detection for mark and space parity.

[-]parodd

Use [even]odd parity.

Input modes

[-]brkint

[Do not]signal INTR on break.

[-]icrnl

[Do not]map carriage return (^M) to newline (^J) on input.

[-]ignbrk

[Do not]ignore break on input.

[-]igncr

[Do not]ignore carriage return on input.

[-]ignpar

[Do not]ignore parity errors.

[-]imaxbel

[Do not]echo BEL when input line is too long.

[-]inlcr

[Do not]map newline to carriage return on input.

[-]inpck

[Disable]enable input parity checking.

[-]istrip

[Do not]strip input characters to seven bits.

[-]iuclc

[Do not]map uppercase to lowercase on input.

[-]ixany

Allow [XON]any character to restart output.

[-]ixoff

[Do not]send START/STOP characters when queue is nearly empty/full.

[-]ixon

[Disable]enable START/STOP output control.

[-]parmrk

[Do not]mark parity errors.

Output modes

bsn

Select style of delay for backspaces (0 or 1).

crn

Select style of delay for carriage returns (0-3).

ffn

Select style of delay for formfeeds (0 or 1).

nln

Select style of delay for linefeeds (0 or 1).

[-]ocrnl

[Do not]map carriage return to newline on output.

[-]ofdel

Set fill character to [NULL]DEL.

[-]ofill

Delay output with [timing]fill characters.

[-]olcuc

[Do not]map lowercase to uppercase on output.

[-]onlcr

[Do not]map newline to carriage return-newline on output.

[-]onlret

[Do not]perform carriage return after newline.

[-]onocr

[Do not]output carriage returns at column zero.

[-]opost

[Do not]postprocess output; ignore all other output modes.

tabn

Select style of delay for horizontal tabs (0-3).

vtn

Select style of delay for vertical tabs (0 or 1).

Local modes

[-]echo

[Do not]echo every character typed.

[-]echoctl

[Do not]echo control characters as ^char, delete as ^?.

[-]echoe

[Do not]echo ERASE character as BS-space-BS string.

[-]echok

[Do not]echo newline after KILL character.

[-]echoke

[Do not]BS-SP-BS erase entire line on line kill.

[-]echonl

[Do not]echo newline (^J).

[-]echoprt

[Do not]echo erase character as character is "erased."

[-]flusho

Output is [not] being flushed.

[-]icanon

[Disable]enable canonical input (ERASE and KILL processing).

[-]iexten

[Disable]enable extended functions for input data.

[-]isig

[Disable]enable checking of characters against INTR, QUIT, and SWITCH.

[-]noflsh

[Enable]disable flush after INTR, QUIT, or SWITCH.

[-]pendin

[Do not]retype pending input at next read or input character.

[-]stappl

[Line]application mode on a synchronous line.

[-]stflush

[Disable]enable flush on synchronous line.

[-]stwrap

[Enable]disable truncation on synchronous line.

[-]tostop

[Do not]send SIGTTOU when background processes write to the terminal.

[-]xcase

[Do not]change case on local output.

Control assignments

ctrl-char c

Set control character to c. ctrl-char is: ctab, discard, dsusp, eof, eol, eol2, erase, intr, kill, lnext, quit, reprint, start, stop, susp, swtch, werase.

min, time n

Set min or time to n.

line i

Set line discipline to i (1-126).

Combination modes

async

Set normal asynchronous communications.

cooked

Same as -raw.

[-]evenp

Same as [-]parenb and cs[8]7.

ek

Reset ERASE and KILL characters to # and @.

[-]lcase

[Un]set xcase, iuclc, and olcuc.

[-]LCASE

Same as [-]lcase.

[-]markp

[Disable]enable parenb, parodd, and parext and set cs[8]7.

[-]nl

[Un]set icrnl and onlcr. -nl also unsets inlcr, igncr, ocrnl, and onlret.

[-]oddp

Same as [-]parenb, [-]parodd, and cs7[8].

[-]parity

Same as [-]parenb and cs[8]7.

[-]raw

[Disable]enable raw input and output (no ERASE, KILL, INTR, QUIT, EOT, SWITCH, or output postprocessing).

sane

Reset all modes to reasonable values.

[-]spacep

[Disable]enable parenb and parext and set cs[8]7.

[-]tabs

[Expand to spaces]preserve output tabs.

term

Set all modes suitable for terminal type term (tty33, tty37, vt05, tn300, ti700, or tek).

Hardware flow control modes

[-]rtsxoff

[Disable]enable RTS on input.

[-]ctsxon

[Disable]enable CTS on output.

[-]dtrxoff

[Disable]enable DTR on input.

[-]cdxon

[Disable]enable CD on output.

[-]isxoff

[Disable]enable isochronous on input.

Clock modes

[x|r]cibrg

Get the transmit|receive clock from internal baud rate generator.

[x|r]ctset

Get the transmit|receive clock from transmitter timing-lead, circuit 114, pin 15.

[x|r]crset

Get the transmit|receive clock from receiver timing-lead, circuit 115, pin 17.

For modes beginning with t, pin is transmitter timing-lead, circuit 113, pin 24. For modes beginning with r, pin is receiver timing-lead, circuit 128, no pin.

[t|r]setcoff

No transmitter|receiver timing clock.

[t|r]setcrbrg

Send receive baud rate generator to pin.

[t|r]setctbrg

Send transmit baud rate generator to pin.

[t|r]setctset

Send transmitter timing to pin.

[t|r]setcrset

Send receiver timing to pin.

Window size

columns n

Set size to n columns.

rows n

Set size to n rows.

xpixels n

Set size to n pixels across.

ypixels n

Set size to n pixels up and down.