OSX UART serial terminal

In OSX, turn on the terminal, plug in your FTDI USB-serial dongle, you should see a new usbserial device created under /dev.  Use "screen" to start the session, remember to state the baudrate at the end of the command:

$ screen /dev/cu.usbserial-FTVLVQ6M 115200

To detach:

Ctrl-a d

To re-attach:

$ screen -r

To kill the screen:

Ctrl-a k