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stty - change and print terminal line settings
stty [-F device]
[--file=device] [SETTING]...
stty [-F device] [--file=device] [-a|--all]
stty [-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
- open
and use the specified device instead of stdin
- --help
- display this help and
exit
- --version
- 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
- N
- 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
- speed
- print the terminal speed
- time N
- with -icanon, set read timeout of N tenths of a second
- [-]clocal
- disable modem control signals
- [-]cread
- allow input to be received
* [-]crtscts
enable RTS/CTS handshaking
- csN
- set character size to N bits, N in [5..8]
- [-]cstopb
- use two stop bits per character (one with `-')
- [-]hup
- send a hangup
signal when the last process closes the tty
- [-]hupcl
- same as [-]hup
- [-]parenb
- generate parity bit in output and expect parity bit in input
- [-]parodd
- set
odd parity (even with `-')
- [-]brkint
- breaks cause an interrupt
signal
- [-]icrnl
- translate carriage return to newline
- [-]ignbrk
- ignore break
characters
- [-]igncr
- ignore carriage return
- [-]ignpar
- ignore characters with
parity errors
* [-]imaxbel beep and do not flush a full input buffer
on a character
- [-]inlcr
- translate newline to carriage return
- [-]inpck
- enable
input parity checking
- [-]istrip
- clear high (8th) bit of input characters
* [-]iuclc translate uppercase characters to lowercase * [-]ixany
let any character restart output, not only start character
- [-]ixoff
- enable
sending of start/stop characters
- [-]ixon
- enable XON/XOFF flow control
- [-]parmrk
- mark parity errors (with a 255-0-character sequence)
- [-]tandem
- 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
- [-]opost
- 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]
- [-]crterase
- 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
- echo input characters
* [-]echoctl same as [-]ctlecho
- [-]echoe
- same as [-]crterase
- [-]echok
- echo a newline after a kill character
* [-]echoke same as [-]crtkill
- [-]echonl
- echo newline even if not echoing
other characters
* [-]echoprt echo erased characters backward, between
`' and '/'
- [-]icanon
- enable erase, kill, werase, and rprnt special characters
- [-]iexten
- enable non-POSIX special characters
- [-]isig
- enable interrupt, quit,
and suspend special characters
- [-]noflsh
- 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
- cbreak
- same as -icanon
- -cbreak
- same as icanon
- cooked
- same as brkint ignpar istrip icrnl ixon opost isig icanon, eof and
eol characters to their default values
- -cooked
- same as raw
- crt
- same as echoe
echoctl echoke
- dec
- same as echoe echoctl echoke -ixany intr ^c erase 0177
kill ^u
* [-]decctlq same as [-]ixany
- ek
- erase and kill characters to their
default values
- evenp
- same as parenb -parodd cs7
- -evenp
- same as -parenb cs8
* [-]lcase same as xcase iuclc olcuc
- litout
- same as -parenb -istrip -opost
cs8
- -litout
- same as parenb istrip opost cs7
- nl
- same as -icrnl -onlcr
- -nl
- same
as icrnl -inlcr -igncr onlcr -ocrnl -onlret
- oddp
- same as parenb parodd cs7
- -oddp
- same as -parenb cs8
- [-]parity
- same as [-]evenp
- pass8
- same as -parenb -istrip
cs8
- -pass8
- same as parenb istrip cs7
- raw
- same as -ignbrk -brkint -ignpar -parmrk
-inpck -istrip -inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany -imaxbel -opost
-isig -icanon -xcase min 1 time 0
- -raw
- same as cooked
- sane
- same as cread -ignbrk
brkint -inlcr -igncr icrnl -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.
Report bugs to <bug-sh-utils@gnu.org>.
The full documentation
for stty is maintained as a Texinfo manual. If the info and stty programs
are properly installed at your site, the command
- info stty
should give
you access to the complete manual.
Copyright © 1999 Free Software
Foundation, Inc.
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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