Is there an easy way to detect your Wi-Fi adapter's capabilities on Linux? I want to check if my wireless card supports IEEE 802.11ac.
You can run
iwconfig to list all of your wifi cards/adapters, list their IEEE, frequency, connected ESSID etc. in a short and clean format. If you want more specific information feel free to use
iw list to see a lot more detailed information.
Some sample output (without being connected to router):
wlan0 IEEE 802.11abgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=off Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off lo no wireless extensions. eth0 no wireless extensions.