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STTY(1) 				  User Commands 				  STTY(1)

NAME
       stty - change and print terminal line settings

SYNOPSIS
       stty [-F DEVICE | --file=DEVICE] [SETTING]...
       stty [-F DEVICE | --file=DEVICE] [-a|--all]
       stty [-F DEVICE | --file=DEVICE] [-g|--save]

DESCRIPTION
       Print or change terminal characteristics.

       -a, --all
	      print all current settings in human-readable form

       -g, --save
	      print all current settings in a stty-readable form

       -F, --file=DEVICE
	      open and use the specified DEVICE instead of stdin

       --help display this help and exit

       --version
	      output version information and exit

       Optional  - before SETTING indicates negation.  An * marks non-POSIX settings.  The under-
       lying system defines which settings are available.

   Special characters:
       * dsusp CHAR
	      CHAR will send a terminal stop signal once input flushed

       eof CHAR
	      CHAR will send an end of file (terminate the input)

       eol CHAR
	      CHAR will end the line

       * eol2 CHAR
	      alternate CHAR for ending the line

       erase CHAR
	      CHAR will erase the last character typed

       intr CHAR
	      CHAR will send an interrupt signal

       kill CHAR
	      CHAR will erase the current line

       * lnext CHAR
	      CHAR will enter the next character quoted

       quit CHAR
	      CHAR will send a quit signal

       * rprnt CHAR
	      CHAR will redraw the current line

       start CHAR
	      CHAR will restart the output after stopping it

       stop CHAR
	      CHAR will stop the output

       susp CHAR
	      CHAR will send a terminal stop signal

       * swtch CHAR
	      CHAR will switch to a different shell layer

       * werase CHAR
	      CHAR will erase the last word typed

   Special settings:
       N      set the input and output speeds to N bauds

       * cols N
	      tell the kernel that the terminal has N columns

       * columns N
	      same as cols N

       ispeed N
	      set the input speed to N

       * line N
	      use line discipline N

       min N  with -icanon, set N characters minimum for a completed read

       ospeed N
	      set the output speed to N

       * rows N
	      tell the kernel that the terminal has N rows

       * size print the number of rows and columns according to the kernel

       speed  print the terminal speed

       time N with -icanon, set read timeout of N tenths of a second

   Control settings:
       [-]clocal
	      disable modem control signals

       [-]cread
	      allow input to be received

       * [-]crtscts
	      enable RTS/CTS handshaking

       csN    set character size to N bits, N in [5..8]

       [-]cstopb
	      use two stop bits per character (one with `-')

       [-]hup send a hangup signal when the last process closes the tty

       [-]hupcl
	      same as [-]hup

       [-]parenb
	      generate parity bit in output and expect parity bit in input

       [-]parodd
	      set odd parity (even with `-')

   Input settings:
       [-]brkint
	      breaks cause an interrupt signal

       [-]icrnl
	      translate carriage return to newline

       [-]ignbrk
	      ignore break characters

       [-]igncr
	      ignore carriage return

       [-]ignpar
	      ignore characters with parity errors

       * [-]imaxbel
	      beep and do not flush a full input buffer on a character

       [-]inlcr
	      translate newline to carriage return

       [-]inpck
	      enable input parity checking

       [-]istrip
	      clear high (8th) bit of input characters

       * [-]iutf8
	      assume input characters are UTF-8 encoded

       * [-]iuclc
	      translate uppercase characters to lowercase

       * [-]ixany
	      let any character restart output, not only start character

       [-]ixoff
	      enable sending of start/stop characters

       [-]ixon
	      enable XON/XOFF flow control

       [-]parmrk
	      mark parity errors (with a 255-0-character sequence)

       [-]tandem
	      same as [-]ixoff

   Output settings:
       * bsN  backspace delay style, N in [0..1]

       * crN  carriage return delay style, N in [0..3]

       * ffN  form feed delay style, N in [0..1]

       * nlN  newline delay style, N in [0..1]

       * [-]ocrnl
	      translate carriage return to newline

       * [-]ofdel
	      use delete characters for fill instead of null characters

       * [-]ofill
	      use fill (padding) characters instead of timing for delays

       * [-]olcuc
	      translate lowercase characters to uppercase

       * [-]onlcr
	      translate newline to carriage return-newline

       * [-]onlret
	      newline performs a carriage return

       * [-]onocr
	      do not print carriage returns in the first column

       [-]opost
	      postprocess output

       * tabN horizontal tab delay style, N in [0..3]

       * tabs same as tab0

       * -tabs
	      same as tab3

       * vtN  vertical tab delay style, N in [0..1]

   Local settings:
       [-]crterase
	      echo erase characters as backspace-space-backspace

       * crtkill
	      kill all line by obeying the echoprt and echoe settings

       * -crtkill
	      kill all line by obeying the echoctl and echok settings

       * [-]ctlecho
	      echo control characters in hat notation (`^c')

       [-]echo
	      echo input characters

       * [-]echoctl
	      same as [-]ctlecho

       [-]echoe
	      same as [-]crterase

       [-]echok
	      echo a newline after a kill character

       * [-]echoke
	      same as [-]crtkill

       [-]echonl
	      echo newline even if not echoing other characters

       * [-]echoprt
	      echo erased characters backward, between `\' and '/'

       [-]icanon
	      enable erase, kill, werase, and rprnt special characters

       [-]iexten
	      enable non-POSIX special characters

       [-]isig
	      enable interrupt, quit, and suspend special characters

       [-]noflsh
	      disable flushing after interrupt and quit special characters

       * [-]prterase
	      same as [-]echoprt

       * [-]tostop
	      stop background jobs that try to write to the terminal

       * [-]xcase
	      with icanon, escape with `\' for uppercase characters

   Combination settings:
       * [-]LCASE
	      same as [-]lcase

       cbreak same as -icanon

       -cbreak
	      same as icanon

       cooked same as brkint ignpar istrip icrnl ixon opost isig icanon, eof and  eol  characters
	      to their default values

       -cooked
	      same as raw

       crt    same as echoe echoctl echoke

       dec    same as echoe echoctl echoke -ixany intr ^c erase 0177 kill ^u

       * [-]decctlq
	      same as [-]ixany

       ek     erase and kill characters to their default values

       evenp  same as parenb -parodd cs7

       -evenp same as -parenb cs8

       * [-]lcase
	      same as xcase iuclc olcuc

       litout same as -parenb -istrip -opost cs8

       -litout
	      same as parenb istrip opost cs7

       nl     same as -icrnl -onlcr

       -nl    same as icrnl -inlcr -igncr onlcr -ocrnl -onlret

       oddp   same as parenb parodd cs7

       -oddp  same as -parenb cs8

       [-]parity
	      same as [-]evenp

       pass8  same as -parenb -istrip cs8

       -pass8 same as parenb istrip cs7

       raw    same  as -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl  -ixon
	      -ixoff  -iuclc  -ixany -imaxbel -opost -isig -icanon -xcase min 1 time 0

       -raw   same as cooked

       sane   same as cread -ignbrk brkint -inlcr -igncr icrnl -iutf8 -ixoff -iuclc -ixany  imax-
	      bel opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
	      isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl
	      echoke, all special characters to their default values

       Handle  the  tty  line  connected to standard input.  Without arguments, prints baud rate,
       line discipline, and deviations from stty sane.	In settings, CHAR is taken literally,  or
       coded  as  in  ^c,  0x37,  0177 or 127; special values ^- or undef used to disable special
       characters.

AUTHOR
       Written by David MacKenzie.

REPORTING BUGS
       Report stty bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report stty translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL  version  3  or
       later <http://gnu.org/licenses/gpl.html>.
       This  is free software: you are free to change and redistribute it.  There is NO WARRANTY,
       to the extent permitted by law.

SEE ALSO
       The full documentation for stty is maintained as a Texinfo manual.  If the info	and  stty
       programs are properly installed at your site, the command

	      info coreutils 'stty invocation'

       should give you access to the complete manual.

GNU coreutils 8.5			  February 2011 				  STTY(1)
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