stty(1)

Synopsis

Description

In the input and output of stty, if a character is preceded by a caret (^), then the value of that option is the corresponding control character (for example, ``^h'' is <Ctrl>H; in this case, recall that <Ctrl>H is the same as the ``backspace'' key.) The sequence ``^´'' means that an option has a null value.

The -- argument is used to indicate the end of options. Any arguments following the -- are treated as operands, even if they begin with a -. The -- should not be used as an option nor as an operand.

-a

Report all option settings.

-g

Report current settings in a form that can be used as an argument to another stty command.

For detailed information about the modes listed in sections ``Control modes'' through ``Local modes''. See termio(7). For detailed information about the modes listed in sections ``Hardware flow control modes'' and ``Clock modes''. See termiox(7). Options described in the ``Combination Modes'' section are implemented using options in the earlier sections. Note that many combinations of options make no sense, but no sanity checking is performed. Hardware flow control and clock modes options may not be supported by all hardware interfaces. The options are selected from the following:

Control modes

parenb (-parenb)

Enable (disable) parity generation and detection.

parext (-parext)

Enable (disable) extended parity generation and detection for mark and space parity.

parodd (-parodd)

Select odd (even) parity, or mark (space) parity if parext is enabled.

cs5 cs6 cs7 cs8

Select character size. See termio(7).

0

Hang up line immediately.

110 300 600 1200 1800 2400 4800 9600 19200 38400

Set terminal baud rate to the number given, if possible. (All speeds are not supported by all hardware interfaces.)

ispeed 0 110 300 600 1200 1800 2400 4800 9600 19200 38400

Set terminal input baud rate to the number given, if possible. (Not all hardware supports split baud rates.) If the input baud rate is set to zero, the input baud rate will be specified by the value of the output baud rate.

ospeed 0 110 300 600 1200 1800 2400 4800 9600 19200 38400

Set terminal output baud rate to the number given, if possible. (Not all hardware supports split baud rates.) If the output baud rate is set to zero, the line will be hung up immediately.

hupcl (-hupcl)

Hang up (do not hang up) connection on last close.

hup (-hup)

Same as hupcl (-hupcl).

cstopb (-cstopb)

Use two (one) stop bits per character.

cread (-cread)

Enable (disable) the receiver.

clocal (-clocal)

Assume a line without (with) modem control.

loblk (-loblk)

Block (do not block) output from a non-current layer.

Input modes

ignbrk (-ignbrk)

Ignore (do not ignore) break on input.

brkint (-brkint)

Signal (do not signal) INTR on break.

ignpar (-ignpar)

Ignore (do not ignore) parity errors.

parmrk (-parmrk)

Mark (do not mark) parity errors. See termio(7).

inpck (-inpck)

Enable (disable) input parity checking.

istrip (-istrip)

Strip (do not strip) input characters to seven bits.

inlcr (-inlcr)

Map (do not map) NL to CR on input.

igncr (-igncr)

Ignore (do not ignore) CR on input.

icrnl (-icrnl)

Map (do not map) CR to NL on input.

iuclc (-iuclc)

Map (do not map) upper-case alphabetics to lower case on input.

ixon (-ixon)

Enable (disable) START/STOP output control. Output is stopped by sending STOP control character and started by sending the START control character.

ixany (-ixany)

Allow any character (only DC1) to restart output.

ixoff (-ixoff)

Request that the system send (not send) START/STOP characters when the input queue is nearly empty/full.

imaxbel (-imaxbel)

Echo (do not echo) BEL when the input line is too long.

KB_ENABLE

Perform a TIOCKBON, which allows extended characters to be transmitted to the user's program. Extended characters are transmitted as a null byte followed by a second byte containing the character's extended code. See keyboard(7).

KB_DISABLE

Perform a TIOCKBOF, which disables the transmission of extended characters. This is the default. (See keyboard(7).)

Output modes

opost (-opost)

Post-process output (do not post-process output; ignore all other output modes).

olcuc (-olcuc)

Map (do not map) lower-case alphabetics to upper case on output.

onlcr (-onlcr)

Map (do not map) NL to CR-NL on output.

ocrnl (-ocrnl)

Map (do not map) CR to NL on output.

onocr (-onocr)

Do not (do) output CRs at column zero.

onlret (-onlret)

On the terminal NL performs (does not perform) the CR function.

ofill (-ofill)

Use fill characters (use timing) for delays.

ofdel (-ofdel)

Fill characters are <Del>s (NULs).

The following options set the delays for the output control characters. Selecting the 0 type option, such as cr0, causes no delay. stty -a does not report the 0 type options. For more information, see termio(7).

cr0 cr1 cr2 cr3

Select style of delay for carriage returns.

nl0 nl1

Select style of delay for line-feeds.

tab0 tab1 tab2 tab3

Select style of delay for horizontal tabs.

bs0 bs1

Select style of delay for backspaces.

ff0 ff1

Select style of delay for form-feeds.

vt0 vt1

Select style of delay for vertical tabs (see termio(7)).

Local modes

isig (-isig)

Enable (disable) the checking of characters against the special control characters INTR, QUIT, and SWTCH.

icanon (-icanon)

Enable (disable) canonical input (ERASE and KILL processing).

xcase (-xcase)

Canonical (unprocessed) upper/lower-case presentation.

echo (-echo)

Echo back (do not echo back) every character typed.

echoe (-echoe)

Echo (do not echo) ERASE character as a backspace-space-backspace string. This mode erases the ERASEed character on many terminals; however, it does not keep track of column position and, as a result, may be confusing on escaped characters, tabs, and backspaces.

echok (-echok)

Echo (do not echo) NL after KILL character.

lfkc (-lfkc)

The same as echok (-echok); obsolete.

echonl (-echonl)

Echo (do not echo) NL.

noflsh (-noflsh)

Disable (enable) flush after INTR, QUIT, or SWTCH.

stwrap (-stwrap)

Disable (enable) truncation of lines longer than 79 characters on a synchronous line.

tostop (-tostop)

Send (do not send) SIGTTOU when background processes write to the terminal.

echoctl (-echoctl)

Echo (do not echo) control characters as ^char, delete as ^?

echoprt (-echoprt)

Echo (do not echo) ERASE character as character is ``erased''.

echoke (-echoke)

BS-SP-BS erase (do not BS-SP-BS erase) entire line on line KILL.

flusho (-flusho)

Output is (is not) being flushed.

pendin (-pendin)

Retype (do not retype) pending input at next read or input character.

iexten (-iexten)

Enable (disable) extended (implementation-defined) functions for input data.

stflush (-stflush)

Enable (disable) flush on a synchronous line after every write(2).

stappl (-stappl)

Use application mode (use line mode) on a synchronous line.

Hardware flow control modes

rtsxoff (-rtsxoff)

Enable (disable) RTS hardware flow control on input.

ctsxon (-ctsxon)

Enable (disable) CTS hardware flow control on output.

dtrxoff (-dtrxoff)

Enable (disable) DTR hardware flow control on input.

cdxon (-cdxon)

Enable (disable) CD hardware flow control on output.

isxoff (-isxoff)

Enable (disable) isochronous hardware flow control on input.

Clock modes

xcibrg

Get transmit clock from internal baud rate generator.

xctset

Get transmit clock from transmitter signal element timing (DCE source) lead, CCITT V.24 circuit 114, EIA-232-D pin 15.

xcrset

Get transmit clock from receiver signal element timing (DCE source) lead, CCITT V.24 circuit 115, EIA-232-D pin 17.

rcibrg

Get receive clock from internal baud rate generator.

rctset

Get receive clock from transmitter signal element timing (DCE source) lead, CCITT V.24 circuit 114, EIA-232-D pin 15.

rcrset

Get receive clock from receiver signal element timing (DCE source) lead, CCITT V.24 circuit 115, EIA-232-D pin 17.

tsetcoff

Transmitter signal element timing clock is not provided.

tsetcrbrg

Output receive baud rate generator on transmitter signal element timing (DTE source) lead, CCITT V.24 circuit 113, EIA-232-D pin 24.

tsetctbrg

Output transmit baud rate generator on transmitter signal element timing (DTE source) lead, CCITT V.24 circuit 113, EIA-232-D pin 24.

tsetctset

Output transmitter signal element timing (DCE source) on transmitter signal element timing (DTE source) lead, CCITT V.24 circuit 113, EIA-232-D pin 24.

tsetcrset

Output receiver signal element timing (DCE source) on transmitter signal element timing (DTE source) lead, CCITT V.24 circuit 113, EIA-232-D pin 24.

rsetcoff

Receiver signal element timing clock is not provided.

rsetcrbrg

Output receive baud rate generator on receiver signal element timing (DTE source) lead, CCITT V.24 circuit 128, no EIA-232-D pin.

rsetctbrg

Output transmit baud rate generator on receiver signal element timing (DTE source) lead, CCITT V.24 circuit 128, no EIA-232-D pin.

rsetctset

Output transmitter signal element timing (DCE source) on receiver signal element timing (DTE source) lead, CCITT V.24 circuit 128, no EIA-232-D pin.

rsetcrset

Output receiver signal element timing (DCE source) on receiver signal element timing (DTE source) lead, CCITT V.24 circuit 128, no EIA-232-D pin.

Control assignments

In the POSIX locale, the caret (circumflex) control characters listed in the table below are set to the values shown:

^a, ^A <SOH>	^l, ^L	<FF>	^w, ^W	<ETB>
^b, ^B	<STX>	^m, ^M	<CR>	^x, ^X	<CAN>
^c, ^C	<ETC>	^n, ^N	<SO>	^y, ^Y	<EM>
^d, ^D	<EOT>	^o, ^O	<SI>	^z, ^Z	<SUB>
^e, ^E	<ENC>	^p, ^P	<DLE>	^[	<ESC>
^f, ^F	<ACK>	^q, ^Q	<DC1>	^\	<FS>
^g, ^G	<BEL>	^r, ^R	<DC2>	^]	<GS>
^h, ^H	<BS>	^s, ^S	<DC3>	^^	<RS>
^i, ^I	<HT>	^t, ^T	<DC4>	^_	<US>
^j, ^J	<LF>	^u, ^U	<NAK>	^?	<<Del>>
^k, ^K	<VT>	^v, ^V	<SYN>

 ^a, ^A  <SOH>   ^l, ^L   <FF>     ^w, ^W   <ETB>
 ^b, ^B          <STX>    ^m, ^M   <CR>     ^x, ^X   <CAN>
 ^c, ^C          <ETC>    ^n, ^N   <SO>     ^y, ^Y   <EM>
 ^d, ^D          <EOT>    ^o, ^O   <SI>     ^z, ^Z   <SUB>
 ^e, ^E          <ENC>    ^p, ^P   <DLE>    ^[       <ESC>
 ^f, ^F          <ACK>    ^q, ^Q   <DC1>    ^\       <FS>
 ^g, ^G          <BEL>    ^r, ^R   <DC2>    ^]       <GS>
 ^h, ^H          <BS>     ^s, ^S   <DC3>    ^^       <RS>
 ^i, ^I          <HT>     ^t, ^T   <DC4>    ^_       <US>
 ^j, ^J          <LF>     ^u, ^U   <NAK>    ^?       <Del>
 ^k, ^K          <VT>     ^v, ^V   <SYN>

For more information on these special characters, see termio(7).

ctab c

Set synchronous terminal tab character to c. Use with the -stappl option.

discard c

Set discard character to c.

dsusp c

Set to c character that suspends foreground process when process attempts to read c.

eof c

Set end-of-file character to c.

eol c

Set end-of-line character to c.

eol2 c

Set secondary end-of-line character to c.

erase c

Set ERASE character to c (default is now BACKSPACE or ^H).

intr c

Set interrupt character to c.

kill c

Set KILL character to c (default is now ^U).

lnext c

Set to c character that causes the special meaning of next character to be ignored.

quit c

Set quit character to c.

reprint c

Set reprint character to c.

start c

Set start character to c.

stop c

Set stop character to c.

susp c

Set suspend character to c.

swtch c

Set switch character to c.

werase c

Set word-erase character to c.

min n

Set the minimum number of characters that satisfy a read in non-canonical mode input processing (-icanon) to n.

time n

Set the intercharacter timer in non-canonical mode input processing (-icanon) to n ticks.

Combination modes

evenp or parity

Enable parenb and cs7.

oddp

Enable parenb, cs7, and parodd.

spacep

Enable parenb, cs7, and parext.

markp

Enable parenb, cs7, parodd, and parext.

-parity, or -evenp

Disable parenb, and set cs8.

-oddp

Disable parenb and parodd, and set cs8.

-spacep

Disable parenb and parext, and set cs8.

-markp

Disable parenb, parodd, and parext, and set cs8.

raw (-raw or cooked)

Enable (disable) raw input and output (no ERASE, KILL, INTR, QUIT, SWTCH, EOT, or output post processing).

nl (-nl)

Unset (set) icrnl, onlcr. In addition -nl unset inlcr, igncr, ocrnl, and onlret.

lcase (-lcase)

Set (unset) xcase, iuclc, and olcuc.

LCASE (-LCASE)

Same as lcase (-lcase).

tabs (-tabs or tab3)

Preserve (expand to spaces) tabs when printing.

ek

Reset ERASE and KILL characters back to defaults of BACKSPACE (or ^H) and ^U.

sane

Reset all modes to some reasonable values.

term

Set all modes suitable for the terminal type term, where term is one of tty33, tty37, vt05, tn300, ti700, or tek.

async

Set normal asynchronous communications where clock settings are xcibrg, rcibrg, tsetcoff and rsetcoff.

Window size

rows n

Set window size to n rows.

columns n

Set window size to n columns.

ypixels n

Set vertical window size to n pixels.

xpixels n

Set horizontal window size to n pixels.

Control modes for the video monitor

mono

Select the monochrome display as the output device for the console screen. This mode is valid if a standard monochrome adapter is present or if a standard enhanced graphics adapter (EGA) is present and the EGA is currently in one of the monochrome display modes.

color

Select a standard regular color display as the output device for the console screen. This mode is valid if a color graphics adapter is present or if a standard EGA is present and is currently in one of the color graphics compatibility modes.

enhanced

Select the enhanced color display as the output device for the console screen. This mode is valid if an EGA is present and is currently in a non-monochrome display mode.

pro

Select the professional graphics adapter as the output device for the system console. This mode is valid if a VGA is present.

Control modes for the attached display devices

MCAMODE

Reinitialize the monochrome graphics adapter.

ENH_CGA

Select CGA hardware emulation, when an AT&T Super-Vu video controller is attached.

The following keyboard and display control modes are valid for the following configurations: standard color graphics adapter (CGA) attached to a standard regular color display; standard enhanced graphics adapter (EGA) (modes 0-6) attached to a standard regular color display or standard enhanced color display.

B40x25

Select 40x25 (40 columns x 25 rows) black and white text display mode.

C40x25

Select 40x25 color text display mode.

B80x25

Select 80x25 black and white text display mode.

C80x25

Select 80x25 color display text mode.

BG320

Select 320x200 black and white graphics display mode.

CG320

Select 320x200 color graphics display mode.

BG640

Select 640x200 black and white graphics display mode.

The following options are valid only when an EGA is attached to a standard regular color display or an enhanced color display.

CG320_D

Select EGA support for 320x200 graphics display mode (EGA mode D).

CG640_E

Select EGA support for 640x200 graphics display mode (EGA mode E).

The following options are valid only when a standard EGA is attached to an IBM monochrome display.

EGAMONO80x25

Select EGA Mode 7 as the display mode. Emulates the support provided by the standard monochrome display adapter.

EGAMONOAPA

Select EGA support for 640x350 graphics display mode (EGA mode F).

ENHMONOAPA2

Select EGA mode F*.

The following options are valid only when a standard EGA is attached to a standard enhanced color display.

ENH_B40x25

Select enhanced EGA support for 40x25 black and white text display mode (EGA mode 0*).

ENH_C40x25

Select enhanced EGA support for 40x25 color text display mode (EGA mode 1*).

ENH_B80x25

Select enhanced EGA support for 80x25 black and white text display mode (EGA mode 2*).

ENH_C80x25

Select enhanced EGA support for 80x25 color text display mode (EGA mode 3*).

ENH_B80x43

Select enhanced EGA support for 80x43 black and white text display mode.

ENH_C80x43

Select enhanced EGA support for 80x43 color text display mode.

CG640x350

Select EGA support for 640x350 graphics display mode (EGA mode 10).

ENH_CG640

Select EGA mode 10*.

The following options are valid only when a standard VGA is attached to a color display.

VGAMONO80x25

Select VGA Mode 7 as the display mode. Emulates the support provided by the standard monochrome display adapter.

VGA_C40x25

Select VGA 40x25 color text display mode.

VGA_C80x25

Select VGA 80x25 color text display mode.

Files

/usr/lib/locale/locale/LC_MESSAGES/uxcore.abi

language-specific message file (see LANG on environ(5)).

References

Notices