I'm trying to communicate with a device over usb-serial cable and I can't figure out how to configure the serial parameters. I can get the tty parameters listed, but I can't seem to change them. Listing the parameters is simple enough with the following command: stty -a < /dev/ttyUSB0 Changing the baud rate to 9600 with the following command line hangs the command (it doesn't return): stty 9600 < /dev/ttyUSB0 Can someone confirm that the stty command is the way that these parameters are supposed to be changed? If stty is the way to configure the port, can anyone suggest why it doesn't seem to work for me (note that I have confirmed that I have write permissions on /dev/ttyUSB0)? regards.