stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
NAME
stty - set the options for a terminal
SYNOPSIS
/usr/ucb/stty [-a] [-g] [-h] [options]
DESCRIPTION
stty sets certain terminal I/O options for the device that is the
current standard input; without arguments, it reports the settings of
certain options.
In this report, if a character is preceded by a caret (^), then the
value of that option is the corresponding CTRL character (for example,
"^h" is CTRL-h; in this case, recall that CTRL-h is the same as the
back-space key.) The sequence "^<Hex-Code B4>" (B4 = acute accent)
means that an option has a null value.
OPTIONS
-a Reports all of the option settings;
-g Reports current settings in a form that can be used as an argu-
ment to another stty command.
-h Reports all the option settings with the control characters in an
easy to read column format.
Options in the last group are implemented using options in the previ-
ous groups. 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:
Special Requests
all Reports the same option settings as stty without arguments,
but with the control characters in column format.
everything
Everything stty knows about is printed. Same as -h option.
speed The terminal speed alone is reported on the standard output.
size The terminal (window) sizes are printed on the standard out-
put, first rows and then columns. This option is only
appropriate if currently running a window system.
size and speed always report on the settings of /dev/tty,
and always report the settings to the standard output.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
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 exta 38400 extb
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 exta 38400 extb
Set terminal input baud rate to the number given, if possi-
ble. (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 exta 38400 extb
Set terminal output baud rate to the number given, if possi-
ble. (Not all hardware supports split baud rates.) If the
baud rate is set to zero, the line will be hung up immedi-
ately.
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.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
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
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 an STOP and started by sending an START.
ixany (-ixany)
Allow any character (only START) to restart output.
decctlq (-decctlq)
Same as -ixany.
ixoff (-ixoff)
Request that the system send (not send) START/STOP charac-
ters when the input queue is nearly empty/full.
tandem (-tandem)
Same as ixoff.
imaxbel (-imaxbel)
Echo (do not echo) BEL when the input line is too long.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
iexten (-iexten)
Enable (disable) extended (implementation-defined) functions
for input data.
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 func-
tion.
ofill (-ofill)
Use fill characters (use timing) for delays.
ofdel (-ofdel)
Fill characters are DELs (NULs).
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.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
Local Modes
isig (-isig)
Enable (disable) the checking of characters against the spe-
cial control characters INTR, QUIT, and SWTCH.
icanon (-icanon)
Enable (disable) canonical input (ERASE and KILL process-
ing).
cbreak (-cbreak)
Same as -icanon.
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 will erase the ERASEed character
on many CRT terminals; however, it does not keep track of
column position and, as a result, may be confusing on
escaped characters, tabs, and backspaces.
crterase (-crterase)
Same as echoe.
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 charac-
ters on a synchronous line.
tostop (-tostop)
Send (do not send) SIGTTOU for background processes.
echoctl (-echoctl)
Echo (do not echo) control characters as ^char, e.g. DEL as
"^?".
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
ctlecho (-ctlecho)
Same as echoctl.
echoprt (-echoprt)
Echo (do not echo) erase character as character is erased.
prterase (-prterase)
Same as echoprt.
echoke (-echoke)
BS-SP-BS erase (do not BS-SP-BS erase) entire line on line
kill.
crtkill (-crtkill)
Same as echoke.
flusho (-flusho)
Output is (is not) being flushed.
pendin (-pendin)
Retype (do not retype) pending input at next read or input
character.
stflush (-stflush)
Enable (disable) flush on a synchronous line after every
write.
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.
dterxoff (-dterxoff)
Enable (disable) DTER hardware flow control on input.
rlsdxon (-rlsdxon)
Enable (disable) RLSD hardware flow control on output.
isxoff (-isxoff)
Enable (disable) isochronous hardware flow control on input.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
Clock Modes
xcibrg Get transmit clock from internal baud rate generator.
xctset Get the transmit clock from transmitter signal element tim-
ing (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 not provided.
tsetcrc Output receive clock on transmitter signal element timing
(DTE source) lead, CCITT V.24 circuit 113, EIA-232-D pin 24,
clock source.
tsetcxc Output transmit clock on transmitter signal element timing
(DTE source) lead, CCITT V.24 circuit 113, EIA-232-D pin 24,
clock source.
rsetcoff Receiver signal element timing clock not provided.
rsetcrc Output receive clock on receiver signal element timing (DTE
source) lead, CCITT V.24 circuit 128, no EIA-232-D pin,
clock source.
rsetcxc Output transmit clock on receiver signal element timing (DTE
source) lead, CCITT V.24 circuit 128, no EIA-232-D pin,
clock source.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
Control Assignments
control-character c
Set control-character to c, where control-character is intr,
quit, erase, kill, eof, eol, eol2, swtch, start, stop, susp,
dsusp, rprnt, flush, werase, lnext min, ctab, time, or brk)
[ctab is used with -stappl; min and time are used with
-icanon; see termio(7)]. If c is preceded by an (escaped
from the shell) caret (^), then the value used is the corre-
sponding CTRL character (for example, "^d" is a CTRL-d);
"^?" is interpreted as DEL and "^-" is interpreted as unde-
fined.
line i Set line discipline to i (0 < i < 127).
Combination Modes
evenp or parity
Enable parenb and cs7.
-evenp, or -parity
Disable parenb, and set cs8.
even (-even)
Same as evenp (-evenp).
oddp Enable parenb, cs7, and parodd.
-oddp Disable parenb and parodd, and set cs8.
odd (-odd)
Same as oddp (-oddp).
spacep Enable parenb, cs7, and parext.
-spacep Disable parenb and parext, and set cs8.
markp Enable parenb, cs7, parodd, and parext.
-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 unsets inlcr,
igncr, ocrnl, and onlret.
lcase (-lcase)
Set (unset) xcase, iuclc, and olcuc.
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stty(1-ucb) (BSD Compatibility Package) stty(1-ucb)
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 normal # and @.
sane Resets 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.
litout (-litout)
Disable (enable) parenb, istrip, and opost, and set cs8
(cs7).
pass8 (-pass8)
Disable (enable) parenb and istrip, and set cs8 (cs7).
crt Set options for a CRT (echoe, echoctl, and, if >= 1200 baud,
echoke.)
dec Set all modes suitable for Digital Equipment Corp. operating
systems users (ERASE, KILL, and INTR characters to "^?",
"^U", and "^C", decctlq, and crt.)
Window Size
rows n Set window size to n rows.
columns n Set window size to n columns.
cols n An alias for columns n.
ypixels n Set vertical window size to n pixels.
xpixels n Set horizontal window size to n pixels.
SEE ALSO
tabs(1), ioctl(2), termio(7), termiox(7).
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