Howtogeek shows you how to setup Wi-Fi on a Raspberry Pi via the command line
You configured your headless Raspberry Pi just the way you want it, it’s settled in and running smoothly, but suddenly you want to move it away from its Ethernet tether with a Wi-Fi module. Skip hooking it back up to all the peripherals and quickly add in Wi-Fi support from the command line.How to Setup Wi-Fi On Your Raspberry Pi via the Command Line
