Ubuntu 16.04 Server install WI-FI connections from command line

vi /etc/network/interfaces

auto lo
iface lo inet loopback

auto wlp2s0
iface wlp2s0  inet static
address 192.168.1.11
netmask 255.255.255.0
gateway 192.168.1.1
wpa-ssid ic
dns-nameserver 8.8.8.8 192.168.1.1
wpa-psk хеш пароля

wpa_passphrase ic MySecretPassphrase

sudo service networking restart