Linux Hint published three ways to connect to WiFi from the command line on Debian.

3 Ways to Connect to WiFi from the Command Line on Debian

This tutorial briefly explains how to connect to Wifi from the command line on Linux Debian and Debian based distributions in 3 different ways: using nmcli, nmtui and wpa_supplicant. Additionally to nmcli, nmtui and wpa_supplicant, the commands iwconfig, iwlist and dhclient are used and briefly explained in this tutorial. 

3 Ways to Connect to WiFi from the Command Line on Debian – Linux Hint