Sometimes you just want to enable Wifi on your Raspberry Pi without leaving your laptop or desktop. I get it.
Luckily Raspbian has made this really easy. You just need to add a file wpa_supplicant.conf
to the root of the SD card.
The file contents look like this:
country=US
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
ssid="your network's Wifi name here"
psk="your network's Wifi password here"
}
Then eject your SD card and plug it into the Pi. It should automatically connect to your Wifi.