stty - Cheap VPS LLC


Section: User Commands (1)
Updated: March 2014
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stty – change and print terminal line settings





[-F DEVICE | --file=DEVICE] [-a|--all]


[-F DEVICE | --file=DEVICE] [-g|--save]


Print or change terminal characteristics.

-a, –all

print all current settings in human-readable form
-g, –save

print all current settings in a stty-readable form
-F, –file=DEVICE

open and use the specified DEVICE instead of stdin

display this help and exit

output version information and exit

Optional – before SETTING indicates negation. An * marks non-POSIX
settings. The underlying system defines which settings are available.

Special characters:

* dsusp CHAR

CHAR will send a terminal stop signal once input flushed
eof CHAR

CHAR will send an end of file (terminate the input)
eol CHAR

CHAR will end the line
* eol2 CHAR

alternate CHAR for ending the line
erase CHAR

CHAR will erase the last character typed
intr CHAR

CHAR will send an interrupt signal
kill CHAR

CHAR will erase the current line
* lnext CHAR

CHAR will enter the next character quoted
quit CHAR

CHAR will send a quit signal
* rprnt CHAR

CHAR will redraw the current line
start CHAR

CHAR will restart the output after stopping it
stop CHAR

CHAR will stop the output
susp CHAR

CHAR will send a terminal stop signal
* swtch CHAR

CHAR will switch to a different shell layer
* werase CHAR

CHAR will erase the last word typed


Special settings:


set the input and output speeds to N bauds
* cols N

tell the kernel that the terminal has N columns
* columns N

same as cols N
ispeed N

set the input speed to N
* line N

use line discipline N
min N

with -icanon, set N characters minimum for a completed read
ospeed N

set the output speed to N
* rows N

tell the kernel that the terminal has N rows
* size

print the number of rows and columns according to the kernel

print the terminal speed
time N

with -icanon, set read timeout of N tenths of a second


Control settings:


disable modem control signals

allow input to be received
* [-]crtscts

enable RTS/CTS handshaking
* [-]cdtrdsr

enable DTR/DSR handshaking

set character size to N bits, N in [5..8]

use two stop bits per character (one with `-‘)

send a hangup signal when the last process closes the tty

same as [-]hup

generate parity bit in output and expect parity bit in input

set odd parity (even with `-‘)


Input settings:


breaks cause an interrupt signal

translate carriage return to newline

ignore break characters

ignore carriage return

ignore characters with parity errors
* [-]imaxbel

beep and do not flush a full input buffer on a character

translate newline to carriage return

enable input parity checking

clear high (8th) bit of input characters
* [-]iutf8

assume input characters are UTF-8 encoded
* [-]iuclc

translate uppercase characters to lowercase
* [-]ixany

let any character restart output, not only start character

enable sending of start/stop characters

enable XON/XOFF flow control

mark parity errors (with a 255-0-character sequence)

same as [-]ixoff


Output settings:

* bsN

backspace delay style, N in [0..1]
* crN

carriage return delay style, N in [0..3]
* ffN

form feed delay style, N in [0..1]
* nlN

newline delay style, N in [0..1]
* [-]ocrnl

translate carriage return to newline
* [-]ofdel

use delete characters for fill instead of null characters
* [-]ofill

use fill (padding) characters instead of timing for delays
* [-]olcuc

translate lowercase characters to uppercase
* [-]onlcr

translate newline to carriage return-newline
* [-]onlret

newline performs a carriage return
* [-]onocr

do not print carriage returns in the first column

postprocess output
* tabN

horizontal tab delay style, N in [0..3]
* tabs

same as tab0
* -tabs

same as tab3
* vtN

vertical tab delay style, N in [0..1]


Local settings:


echo erase characters as backspace-space-backspace
* crtkill

kill all line by obeying the echoprt and echoe settings
* -crtkill

kill all line by obeying the echoctl and echok settings
* [-]ctlecho

echo control characters in hat notation (`^c’)

echo input characters
* [-]echoctl

same as [-]ctlecho

same as [-]crterase

echo a newline after a kill character
* [-]echoke

same as [-]crtkill

echo newline even if not echoing other characters
* [-]echoprt

echo erased characters backward, between `’ and ‘/’

enable erase, kill, werase, and rprnt special characters

enable non-POSIX special characters

enable interrupt, quit, and suspend special characters

disable flushing after interrupt and quit special characters
* [-]prterase

same as [-]echoprt
* [-]tostop

stop background jobs that try to write to the terminal
* [-]xcase

with icanon, escape with `’ for uppercase characters


Combination settings:

* [-]LCASE

same as [-]lcase

same as -icanon

same as icanon

same as brkint ignpar istrip icrnl ixon opost isig
icanon, eof and eol characters to their default values

same as raw

same as echoe echoctl echoke

same as echoe echoctl echoke -ixany intr ^c erase 0177
kill ^u
* [-]decctlq

same as [-]ixany

erase and kill characters to their default values

same as parenb -parodd cs7

same as -parenb cs8
* [-]lcase

same as xcase iuclc olcuc

same as -parenb -istrip -opost cs8

same as parenb istrip opost cs7

same as -icrnl -onlcr

same as icrnl -inlcr -igncr onlcr -ocrnl -onlret

same as parenb parodd cs7

same as -parenb cs8

same as [-]evenp

same as -parenb -istrip cs8

same as parenb istrip cs7

same as -ignbrk -brkint -ignpar -parmrk -inpck -istrip
-inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany
-imaxbel -opost -isig -icanon -xcase min 1 time 0

same as cooked

same as cread -ignbrk brkint -inlcr -igncr icrnl -iutf8
-ixoff -iuclc -ixany imaxbel opost -olcuc -ocrnl onlcr
-onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
isig icanon iexten echo echoe echok -echonl -noflsh
-xcase -tostop -echoprt echoctl echoke, all special
characters to their default values

Handle the tty line connected to standard input. Without arguments,
prints baud rate, line discipline, and deviations from stty sane. In
settings, CHAR is taken literally, or coded as in ^c, 0x37, 0177 or
127; special values ^- or undef used to disable special characters.


Written by David MacKenzie.


Report stty bugs to [email protected]

GNU coreutils home page: <>

General help using GNU software: <>

Report stty translation bugs to <>


Copyright © 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <>.

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.


The full documentation for

is maintained as a Texinfo manual. If the


programs are properly installed at your site, the command

info coreutils ‘stty invocation’

should give you access to the complete manual.






Special characters:

Special settings:

Control settings:

Input settings:

Output settings:

Local settings:

Combination settings:





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