[Wireless] How to connect wifi by command

Install package
pacman -S iw

Scan SSID
sudo iw dev wlp3s0 scan | grep SSID
Connect to SSID
sudo iw dev wlp3s0 connect Happy-Together key 0:12345
Get IP
dhclient wlp3s0
Reference:

• Wireless network configuration
• Using iw command to link AP