NetworkManager is showing a number of different wireless networks available in my neighbourhood. I would like to know what channels the other wireless networks are operating on. How can I view these wireless network's channel information?

I am aware of the iwlist scan command but it does not see most of the networks that NetworkManager sees: the networks shown by running sudo iwlist wlan0 scan are completely different from NetworkManager's list.


You can just use the nm-tool command, it shows the information from NetworkManager it self.

nm-tool will list all of the visible wifi networks' frequencies. The command sudo iwlist frequency will give you a list of their corresponding wifi channel numbers.

  • Awesome, I searched quite a bit for ways to scan for wireless networks and never saw nm-tool mentioned. Thank you! – mars Aug 16 '11 at 21:25
  • One caveat - If your Internet connection is hooked up directly to your system via a cable modem or DSL and not wireless, you will not receive any other wireless information in your vicinity. These commands will only give you what your direct connection is. – stevedude Jun 23 '14 at 20:31

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