樹莓派 /etc/network/interface 直接進行WiFi設定

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
auto wlan0


iface wlan0 inet dhcp
        wpa-ssid "ssid"
        wpa-psk "password"

參考
  Setting up Wifi with the Command Line