stty(1B) SunOS/BSD Compatibility Package Commands stty(1B)NAMEstty - set the options for a terminal
SYNOPSIS
/usr/ucb/stty [-a] [-g] [-h] [modes]
DESCRIPTIONstty sets certain terminal I/O options for the device that is the cur‐
rent standard output. Without arguments, stty reports the settings of
certain options.
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
BACKSPACE key.) The sequence ^@ means that an option has a null value.
-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 previous
groups. Many combinations of options make no sense, but no sanity
checking is performed. Hardware flow control and clock modes options
might 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 argu‐
ments, 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 out‐
put.
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 is 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 is 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. Out‐
put is stopped by sending an STOP and started by
sending an START.
ixany (-ixany) Allow any character (only START) to restart out‐
put.
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. For information on SWTCH, see
NOTES.
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 pre‐
sentation.
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 erases the ERASEed character on many CRT
terminals; however, it does not keep track of
column position and, as a result, can be con‐
fusing 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. For information on SWTCH, see NOTES.
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 pro‐
cesses.
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 character.
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 syn‐
chronous 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 con‐
trol on input.
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.
Control Assignments
control-character c Set control-character to c, where control-char‐
acter 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 pre‐
ceded by an (escaped from the shell) caret (^),
then the value used is the corresponding CTRL
character (for example, ``^d'' is a Control-d).
``^?'' is interpreted as DEL and ``^−'' is
interpreted as undefined. For information on
SWTCH, see NOTES.
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). For information on SWTCH, see
NOTES.
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
DEL and CTRL-u, respectively.
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.
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
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.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │compatibility/ucb │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOtabs(1), ioctl(2), attributes(5), termio(7I), termiox(7I)NOTES
Solaris does not support any of the actions implied by swtch, which was
used by the sxt driver on System V release 4. Solaris allows the swtch
value to be set, and prints it out if set, but it does not perform the
swtch action.
The job switch functionality on Solaris is actually handled by job con‐
trol. susp is the correct setting for this.
SunOS 5.11 14 Feb 2005 stty(1B)
