preconfiureRaspberryPiWiFi.md

Hat tip: https://howchoo.com/g/ndy1zte2yjn/how-to-set-up-wifi-on-your-raspberry-pi-without-ethernet

For Raspbian Stretch and Raspbian Buster

country=US # Your 2-digit country code
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
network={
    ssid="YOUR_NETWORK_NAME"
    psk="YOUR_PASSWORD"
    key_mgmt=WPA-PSK
}

For unsecured networks

country=US # Your 2-digit country code
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev # Include this line for Stretch
network={
    ssid="YOUR_NETWORK_NAME"
    key_mgmt=NONE
}