nmcli guide
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list wifi APs
$ nmcli device wifi list
adding a new connection
nmcli con add con-name <connection name> ifname <wifi interface name> type wifi ssid <wireless ssid>
$ sudo nmcli con add con-name homewifi ifname wlan0 type wifi ssid homewifi
connect to wifi AP
$ nmcli con up <ssid>
networkmanager status
connection status
device info
# nmcli dev show eth0 GENERAL.DEVICE: eth0 GENERAL.TYPE: ethernet GENERAL.HWADDR: F0:1F:AF:19:F9:AB GENERAL.MTU: 1500 GENERAL.STATE: 100 (connected) GENERAL.CONNECTION: eth0 GENERAL.CON-PATH: /org/freedesktop/NetworkManager /ActiveConnection/0 WIRED-PROPERTIES.CARRIER: on IP4.ADDRESS[1]: 192.168.167.7/25 IP4.GATEWAY: 192.168.167.3 IP6.ADDRESS[1]: fe80::f21f:afff:fe19:f9ab/64 IP6.GATEWAY: IP6.ROUTE[1]: dst = ff00::/8, nh = ::, mt = 256