stty(1B) SunOS/BSD Compatibility Package Commands stty(1B)
stty - set the options for a terminal
/usr/ucb/stty [-a] [-g] [-h] [modes]
stty sets certain terminal I/O options for the device that is the cur‐
rent standard output; 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 ‘‘^’’’ means that an option has a
null value.
-a Report all of the option settings.
-g Report current settings in a form that can be used as an argument
to another stty command.
-h Report 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 previous
groups. Note: Many combinations of options make no sense, but no san‐
ity 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 output,
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.
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(7I)).
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 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 exta 38400 extb
Set terminal output baud rate to the number given, if possible.
(Not all hardware supports split baud rates.) If the 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.
crtscts (-crtscts)
Enable hardware flow control. Raise the RTS (Request to Send)
modem control line. Suspends output until the CTS (Clear to
Send) line is raised.
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(7I)).
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 characters
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.
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 function.
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 (see termio(7I)).
nl0 nl1
Select style of delay for line-feeds (see termio(7I)).
tab0 tab1 tab2 tab3
Select style of delay for horizontal tabs (see termio(7I)).
bs0 bs1
Select style of delay for backspaces (see termio(7I)).
ff0 ff1
Select style of delay for form-feeds (see termio(7I)).
vt0 vt1
Select style of delay for vertical tabs (see termio(7I)).
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).
Does not set MIN or TIME.
cbreak (-cbreak)
Equivalent to -icanon min 1 time 0.
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. Note: 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 charac‐
ters, 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 characters on
a synchronous line. (Does not apply to the 3B2.)
tostop (-tostop)
Send (do not send) SIGTTOU for background processes.
echoctl (-echoctl)
Echo (do not echo) control characters as ^char, delete as ^?
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 char‐
acter.
stflush (-stflush)
Enable (disable) flush on a synchronous line after every
write(2). (Does not apply to the 3B2.)
stappl (-stappl)
Use application mode (use line mode) on a synchronous line. (Does
not apply to the 3B2.)
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.
Clock Modes
xcibrg
Get transmit clock from internal baud rate generator.
xctset
Get the 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 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.
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(7I)). If c is preceded by an (escaped from the shell)
caret (^), then the value used is the corresponding CTRL charac‐
ter (for example, ‘‘^d’’ is a CTRL-d); ‘‘^?’’ is interpreted as
DEL and ‘‘^−’’ is interpreted as undefined.
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.
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 sys‐
tems users ERASE, KILL, and INTR characters to ^?, ^U, and ^C,
decctlq, and crt.)
Window Size
rowsn Set window size to n rows.
columnsn
Set window size to n columns.
colsn An alias for columns n.
ypixelsn
Set vertical window size to n pixels.
xpixelsn
Set horizontal window size to n pixels.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
tabs(1), ioctl(2), attributes(5), termio(7I), termiox(7I)
SunOS 5.9 6 Jan 1993 stty(1B)