STTY(1)STTY(1)NAMEstty - set terminal parameters
SYNOPSISstty [-ag]
stty encoded-form
stty speed ispeed speed ospeed speed cs5 cs6 cs7 cs8 [-]parenb [-]par‐
odd [-]hupcl [-]cstopb [-]cread [-]clocal [-]ignbrk [-]brkint
[-]ignpar [-]parmrk [-]inpck [-]istrip [-]inlcr [-]igncr [-]icrnl
[-]ixon [-]ixoff [-]ixany [-]opost [-]onlcr [-]xtabs [-]onoeot
[-]isig [-]icanon [-]iexten [-]echo [-]echoe [-]echok [-]echonl
[-]noflsh [-]tostop [-]lflusho eof=c eol=c erase=c erase=c intr=c
kill=c quit=c susp=c start=c stop=c rprnt=c lnext=c flush=c min=n
time=n rows n cols n xpixels n ypixels n cooked raw [-]evenp
[-]parity [-]oddp [-]nl ek sane
DESCRIPTION
Stty shows or changes the parameters of the terminal connected to stan‐
dard input. Stty takes a myriad of arguments most of which are mapped
directly to the flags and special characters described in tty(4), so we
won't describe them here.
Stty has three forms of operation. First, without any arguments stty
shows all terminal attributes that are different from the default
state. Option -a makes stty print all terminal attributes, and -g lets
stty print the attributes in a special encoded form, a simple row of
colon separated hexadecimal numbers.
In the second form of operation stty takes an encoded form as produced
by the -g option and sets the terminals attributes to its decoded
value.
In the third form stty interprets a series of flags and parameters set‐
tings and modifies the terminal attributes accordingly. Flags can be
given as icanon or -icanon for instance, either setting or clearing the
ICANON flag. Special character values can by set like intr=^C for
example, which sets the interrupt character to CTRL-C. You can either
use a real CTRL-C, or the two characters `^' and `C'. In any case it
is probably necessary to use quotes to guard it from the shell:
intr='^C'.
A number alone is interpreted as a baud rate setting for both the input
and output rate. The input or the output rate can be set separately
with use of the ispeed and ospeed prefixes to the number. The charac‐
ter size can be set with cs5, cs6, cs7 or cs8.
The MIN and TIME value, the number of rows and columns, and the xpixels
and ypixels of the window can also be set using one of the keywords
min, time, rows, cols, xpixels or ypixels, followed by a decimal number
that is the value of the setting.
Stty accepts several keywords that are not named by corresponding flags
or parameters in tty(4). They set several attributes at once:
cooked Same as icrnl ixon opost onlcr isig icanon iexten echo, setting
all the attributes that are needed for line oriented mode.
raw Same as -icrnl -ixon -opost -onlcr -isig -icanon -iexten -echo,
setting all the attributes for a raw data channel.
evenp parity
These synonyms are equal to cs7 parenb -parodd, setting the line
to 7 bits even parity.
oddp Same as cs7 parenb parodd, setting the line to 7 bits odd par‐
ity.
-parity -evenp -oddp
All synonyms for cs8 -parenb, setting the line to 8 bits, no
parity.
nl Same as icrnl, setting carriage return to line feed input trans‐
lation.
-nl Same as -icrnl -inlcr -igncr, disabling any carriage return or
line feed handling.
ek Set the ERASE and KILL special characters back to the default.
sane Set all attributes to the default except things like the line
speed and parity, because their "sane" value is probably what it
is right now. The default values are compiled into stty from
the <termios.h> include file. Use stty sane; stty-a to know
what they are.
FILES
/etc/ttytab The init field of this file may contain an stty command
to set the attributes to match an attached RS232 termi‐
nal or modem.
SEE ALSOtty(4), ttytab(5).
NOTES
The cooked, raw, rows, cols, xpixels and ypixels keywords are MINIX 3
additions beyond the keywords defined by POSIX. Rows and cols are com‐
mon UNIX extensions, however. There are more MINIX 3 specific flags
that match the MINIX 3 specific attributes described in tty(4).
AUTHOR
Kees J. Bot <kjb@cs.vu.nl>
STTY(1)
