Hi there, I have an FTDI based system that I am able to communicate with fine on a Linux machine using: talk -d /dev/ttyUSB0 but I would like to do programming using my Mac (running 10.9.5). The FTDI drivers came with Mavericks, and I can see the device just fine as /dev/tty.usbserial-A123456 but if I try talk /dev/tty.usbserial-A123456 9600 8N1 I get talk: localhost: Unknown host. I searched around and it seems most people use screen so I tried: screen -r /dev/tty.usbserial-A123456 9600 8N1 but get "cannot execute screen '/dev/tty.usbserial-A123456' no such file or directory" Is this not commonly done over terminal? I'm fairly experienced in Linux, but never used Terminal on the Mac extensively. Thanks a lot.