Serial Port Programming Part11 - stty tutorial

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stty is used to

  • display the current terminal settings
  • Modify the terminal settings
Display all settings: stty -a
The above command displays settings of tty device attached to your shell
If you want to find out the settings of another device file,  specify the device file name using '-F' option

stty -F -a /dev/ttyUSB0


Set/Clear a particular setting:

To clear a particular setting, add a '-' in front of the setting.

For example, to disable hardware flow control, you need to run 

stty -F /dev/ttyUSB0 -crtscts

To enable the setting, dont add '-' in front of the setting


stty  -F /dev/ttyUSB0 crtscts


Changing the baud rate:

stty -F /dev/ttyUSB0 <new baud rate>




Store/Restore Settings:

stty allows you to save settings for you to restore later.

'stty -g' command will display settings in a format which you can use pass later to stty





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