Display all the current settings for the terminal to standard output as per -p1003.2.
-e
Display all the current settings for the terminal to standard output in the traditional BSD ‘‘all’’ and ‘‘everything’’ formats.
-f
Open and use the terminal named by file rather than using standard input. The file is opened using the O_NONBLOCK flag of open, making it possible to set or display settings on a terminal that might otherwise block on the open.
-g
Display all the current settings for the terminal to standard output in a form that may be used as an argument to a subsequent invocation of stty to restore the current terminal state as per -p1003.2.
The following arguments are available to set the terminal characteristics:
Set terminal baud rate to the number given, if possible. If the baud rate is set to zero, modem control is no longer asserted.
ispeed number
Set terminal input baud rate to the number given, if possible. If the input baud rate is set to zero, the input baud rate is set to the value of the output baud rate.
ospeed number
Set terminal output baud rate to the number given, if possible. If the output baud rate is set to zero, modem control is no longer asserted.
speed number
This sets both ispeed and ospeed to number.
hupcl(-hupcl)
Stop asserting modem control (do not stop asserting modem control) on last close.
Ignore (do not ignore) characters with parity errors.
parmrk(-parmrk)
Mark (do not mark) characters with 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.
ixon(-ixon)
Enable (disable) START/STOP output control. Output from the system is stopped when the system receives STOP and started when the system receives START, or if ixany is set, any character restarts output.
ixoff(-ixoff)
Request that the system send (not send) START/STOP characters when the input queue is nearly empty/full.
ixany(-ixany)
Allow any character (allow only START) to restart output.
imaxbel(-imaxbel)
The system imposes a limit of MAX_INPUT (currently 255) characters in the input queue. If imaxbel is set and the input queue limit has been reached, subsequent input causes the system to send an ASCII BEL character to the output queue (the terminal beeps at you). Otherwise, if imaxbel is unset and the input queue is full, the next input character causes the entire input and output queues to be discarded.
Enable (disable) the checking of characters against the special control characters INTR, QUIT, and SUSP.
icanon(-icanon)
Enable (disable) canonical input ( ERASE and KILL processing).
iexten(-iexten)
Enable (disable) any implementation defined special control characters not currently controlled by icanon, isig, or ixon.
echo(-echo)
Echo back (do not echo back) every character typed.
echoe(-echoe)
The ERASE character shall (shall not) visually erase the last character in the current line from the display, if possible.
echok(-echok)
Echo (do not echo) NL after KILL character.
echoke(-echoke)
The KILL character shall (shall not) visually erase the current line from the display, if possible.
echonl(-echonl)
Echo (do not echo) NL, even if echo is disabled.
echoctl(-echoctl)
If echoctl is set, echo control characters as ^X. Otherwise control characters echo as themselves.
echoprt(-echoprt)
For printing terminals. If set, echo erased characters backwards within ‘‘#146;’ and ‘‘/’’. Otherwise, disable this feature.
noflsh(-noflsh)
Disable (enable) flush after INTR, QUIT, SUSP.
tostop(-tostop)
Send (do not send) SIGTTOU for background output. This causes background jobs to stop if they attempt terminal output.
altwerase(-altwerase)
Use (do not use) an alternate word erase algorithm when processing WERASE characters. This alternate algorithm considers sequences of alphanumeric/underscores as words. It also skips the first preceding character in its classification (as a convenience since the one preceding character could have been erased with simply an ERASE character.)
mdmbuf(-mdmbuf)
If set, flow control output based on condition of Carrier Detect. Otherwise writes return an error if Carrier Detect is low (and Carrier is not being ignored with the CLOCAL flag.)
flusho(-flusho)
Indicates output is (is not) being discarded.
pendin(-pendin)
Indicates input is (is not) pending after a switch from non-canonical to canonical mode and will be re-input when a read becomes pending or more input arrives.
Set control-character to string. If string is a single character, the control character is set to that character. If string is the two character sequence "^-" or the string "undef" the control character is disabled (i.e., set to { _POSIX_VDISABLE }.)
Recognized control-characters:
control-
character Subscript Description
_________ _________ _______________
eof VEOF EOF character
eol VEOL EOL character
eol2 VEOL2 EOL2 character
erase VERASE ERASE character
erase2 VERASE2 ERASE2 character
werase VWERASE WERASE character
intr VINTR INTR character
kill VKILL KILL character
quit VQUIT QUIT character
susp VSUSP SUSP character
start VSTART START character
stop VSTOP STOP character
dsusp VDSUSP DSUSP character
lnext VLNEXT LNEXT character
reprint VREPRINT REPRINT character
status VSTATUS STATUS character
min number time number
Set the value of min or time to number. MIN and TIME are used in Non-Canonical mode input processing (-icanon).
Set the current terminal characteristics to the saved settings produced by the -g option.
evenp or parity
Enable parenb and cs7; disable parodd.
oddp
Enable parenb, cs7, and parodd.
-parity -, -evenp -, -oddp
Disable parenb, and set cs8.
nl(-nl)
Enable (disable) icrnl. In addition -nl unsets inlcr and igncr.
ek
Reset ERASE, ERASE2, and KILL characters back to system defaults.
sane
Resets all modes to reasonable values for interactive terminal use.
tty
Set the line discipline to the standard terminal line discipline TTYDISC.
crt(-crt)
Set (disable) all modes suitable for a CRT display device.
kerninfo(-kerninfo)
Enable (disable) the system generated status line associated with processing a STATUS character (usually set to ^T). The status line consists of the system load average, the current command name, its process ID, the event the process is waiting on (or the status of the process), the user and system times, percent cpu, and current memory usage.
columns number
The terminal size is recorded as having number columns.
cols number
is an alias for columns.
rows number
The terminal size is recorded as having number rows.
dec
Set modes suitable for users of Digital Equipment Corporation systems ( ERASE, KILL, and INTR characters are set to ^?, ^U, and ^C; ixany is disabled, and crt is enabled.)
extproc(-extproc)
If set, this flag indicates that some amount of terminal processing is being performed by either the terminal hardware or by the remote side connected to a pty.
raw(-raw)
If set, change the modes of the terminal so that no input or output processing is performed. If unset, change the modes of the terminal to some reasonable state that performs input and output processing. Note that since the terminal driver no longer has a single RAW bit, it is not possible to intuit what flags were set prior to setting raw. This means that unsetting raw may not put back all the setting that were previously in effect. To set the terminal into a raw state and then accurately restore it, the following shell code is recommended:
save_state=$(stty -g)
stty raw
...
stty "$save_state"
size
The size of the terminal is printed as two numbers on a single line, first rows, then columns.
