sparkfun KIT-1432 Manual page 15

Using a Mac OS, you'll need to open a terminal window. To figure out which
port the Pi has connected to, type this command:
ls /dev/cu.usbserial­*
This will return a list of USB-Serial converter ports on the system. Take
note of the devices on the list, then unplug the Pi and see which port on the
list disappears. The port which disappeared from the list is the one you
want. You can then connect to the port in question by typing
screen /dev/cu.usbserial­XXXXXXXX 115200
where the XXXXXXXXX is replaced by information gleaned from the first
command.
Linux
Under Linux, the process is similar to Mac OS, only use this command to
identify the serial port:
ls /dev/ttyUSB*
You may use "screen" to connect to the Pi:
screen /dev/ttyUSBX 115200
Again, the "X" should be replaced with information gleaned from the
command above. If you receive an error about screen not being installed,
you can install by typing this command:
screen
sudo apt­get install screen
Then re-enter the above command to connect via
Log In to the Pi
When the Pi finishes booting (about 30 seconds) you should see a prompt
on your serial terminal screen that looks like the image below. If you don't,
try hitting the enter (or return) key. This will bring up the login information if
it printed before you had your serial terminal ready.
Log in to the system using the username "pi" and the password "raspberry".
You're now logged in to the Raspberry Pi, and everything else we do we'll
do from this command prompt.
Use the raspi-config Utility to Enable Camera,
I2C, and SSH
There's a nifty text-only utility called "raspi-config" that will allow you to
enable the camera interface, I2C, and remote access via SSH. To use it
simply type this command:
ls
.
screen
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