You might have noticed that I had quite a number of Wi-Fi related posts lately. In the process, I have discovered a number of new Linux command line tools to find out more about the capabilities of the Wi-Fi network adapter in a device, the capabilities of the Access Point my device is connected to, and about the capabilities of all other Access Points in the area. So here’s a cheat sheet with a summary of those commands:
# Quick info on which channel the notebook is connected, # + signal strength iwconfig # Current connection info, e.g. if a 20, 40, 80 or 160 MHz # channel is used sudo iw wlp3s0 station dump # Capabilities of the network adapter in the notebook sudo iw phy # Get details of the features the current Wi-Fi Access # Point supports: sudo iw dev wlp3s0 scan | grep -A 150 associated # Get an overview of all networks the notebook can receive: sudo iw dev wlp3s0 scan | grep -w 'channel\|SSID\|signal' # Get the capabilities of all Wi-Fi's that can be received: sudo iw dev wlp3s0 scan
Very hand stuff!