nmcli
Usage
Activate saved connection
nmcli connection up DHCP
nmcli connection down DHCP
Connect to wifi
List available Wi-fi networks:
nmcli dev wifi
Connect:
nmcli dev status
nmcli radio wifi
nmcli dev wifi list
Connect to unencrypted wifi:
nmcli dev wifi con hamburg.freifunk.net
Connect to WPA2 wifi:
nmcli dev wifi con SSID password PASSWORD name "Connection1"