How to setup wifi (5G) by cli on Raspberry Pi

Raspberry Pi OS provides a command to configure Wi-Fi from the command line, useful for developers who cannot conveniently use a GUI. Run:

# raspi-config

A TUI configuration screen appears. Select “System Options”.

Select “Wireless Lan”.

Enter the SSID, or Wi-Fi name, to connect to. This example uses “wifi_5g”.

Enter the Wi-Fi password.

Once connected to Wi-Fi, select Finish.

If it is 5 GHz Wi-Fi and fails to connect with the following error:

<b>Error: No network with SSID 'wifi_5g' found.</b>

The selected Wi-Fi country does not support it. Change the country as follows:

Select “Localisation Options”.

Select “WLAN Country”.

Select “US United States”.

When finished, select “Finish” and reboot with:

# reboot

Then configure Wi-Fi again using the steps above.

Trick

To check which SSID Raspberry Pi OS is connected to, run:

# iwconfig