stty

Display and change terminal line settings

TLDR

Show all settings

$ stty -a

Show settings for device

$ stty -a -F [/dev/ttyUSB0]

Set baud rate

$ stty -F [/dev/ttyUSB0] [115200]

Disable echo

$ stty -echo

Enable raw mode

$ stty raw

Reset to sane defaults

$ stty sane

Set terminal size

$ stty rows [24] cols [80]

stty displays or changes terminal line settings. It controls various aspects of terminal I/O including baud rate, character processing, and signal handling.The tool is essential for configuring serial ports and customizing terminal behavior.

PARAMETERS

-a, --all

Print all settings.

-g, --save

Print in stty-readable form.

-F device, --file=device

Open and use the specified device instead of stdin.

sane

Reset to sane values.

raw

Raw mode (no processing).

cooked

Normal mode (opposite of raw).

echo / -echo

Enable/disable echoing of input characters.

rows n

Set terminal rows.

cols n

Set terminal columns.

ispeed n

Set input baud rate.

ospeed n

Set output baud rate.

ixon / -ixon

Enable/disable START/STOP output control.

ixoff / -ixoff

Enable/disable sending of START/STOP characters.

crtscts / -crtscts

Enable/disable RTS/CTS hardware flow control.

cstopb / -cstopb

Use two stop bits per character (one with '-').

INSTALL

sudo apt install coreutils

sudo dnf install coreutils

sudo pacman -S coreutils

sudo apk add coreutils

sudo zypper install coreutils

brew install coreutils

nix profile install nixpkgs#coreutils

CAVEATS

Settings affect current terminal. Some require appropriate privileges. Raw mode disables many features. Changes may not persist.

HISTORY

stty (set tty) is a traditional Unix utility dating back to early Unix versions. It remains essential for serial communication and terminal configuration.