Setting up Wi-Fi on Raspberry Pi (command line)

If you're working with a Raspberry Pi, you can attach a Wi-Fi dongle (like this one)
to get wireless access on the device.

To connect to a WPA authenticated wireless network:

$ wpa_cli
> scan
> scan_results
> set_network 0
> set_network 0 ssid "<ssid>"
> set_network 0 psk "<password>"
> enable_network 0
> save_config

# (Ctrl+C to exit)

Note: you need the double quotes.