Wireless under Ubuntu Server 16.04
Install wpasupplicant if not already installed:
sudo apt install wpasupplicant
Find out your Wireless interface name using "iwconfig" command. If it is not installed, install it using
sudo apt install wireless-tools
The interface name will be like wlp3s0 or wlp3s0b1 or something similar to this.
Find the interface name
iwconfig
Add the Wireless interface configuration to /etc/network/interfaces. For example, taking wlp3s0b1 as Wireless interface name:
# wifi interface auto wlp3s0b1 iface wlp3s0b1 inet dhcp wpa-ssid <YOUR WIFI NETWORK NAME> wpa-psk <YOUR WIFI NETWORK PASSWORD> # usb tethering to phone auto wlp3s0b2 iface wlp3s0b2 inet dhcp
Save /etc/network/interfaces and run
sudo service networking restart
For more detailed instructions, see https://wiki.debian.org/WiFi/HowToUse