Ubuntu 20.04 and Raspberry Pi Ubuntu – Connect To Wifi Command Line

Ubuntu 20.04: connect to wifi command line. On Raspberry Pi Ubuntu, connect to wifi command line. Here is how to connect to wifi using terminal in Ubunu Linux:

To begin with, identify the name of your wireless network interface. To do so execute the following command:

$ ls /sys/class/net

You can also know the name of our network interface using the iwconfig command:

$ iwconfig

You will see that the wireless network interface name would be something like: wlan0 or wlp3s0 or something like this. Once you get the interface name, you will need to activate it if it’s not already activated. To activate, run the ifconfig command:

$ sudo ifconfig wlp3s0 up
$ sudo iwlist wlp3s0 s | grep 'Cell\|Quality\|ESSID\|IEEE'

Now to connect to Ubuntu wifi using command line, edit the Netplan configuration file using the following command and insert the following configuration stanza while replacing the SSID-NAME-HERE and PASSWORD-HERE with your SSID network name and password (see below):

$ sudoedit /etc/netplan/50-cloud-init.yaml

The configuration should look like this:

wifis:
wlan0:
optional: true
access-points:
"SSID-NAME-HERE":
password: "PASSWORD-HERE"
dhcp4: true

Now execute the following command to apply the changes and connect to your wifi.

$ sudo netplan --debug apply