Is there a program to see channels used by Wi-Fi networks (similar to Vistumbler or inSSIDer) in Ubuntu?

Solution 1:

In addition to Rozza's answer you can group the results and see how much each channel is used:

sudo iwlist wlan0 scan | grep Frequency | sort | uniq -c | sort -n

Example output would be like this (first column is count, see uniq -c ):

  1                     Frequency:2.422 GHz (Channel 3)
  1                     Frequency:2.432 GHz (Channel 5)
  1                     Frequency:5.26 GHz (Channel 52)
  1                     Frequency:5.5 GHz (Channel 100)
  2                     Frequency:2.452 GHz (Channel 9)
  2                     Frequency:2.472 GHz (Channel 13)
  3                     Frequency:2.447 GHz (Channel 8)
  6                     Frequency:2.437 GHz (Channel 6)
  6                     Frequency:2.462 GHz (Channel 11)
  7                     Frequency:5.18 GHz (Channel 36)
  8                     Frequency:2.412 GHz (Channel 1)

If you get something like wlan0 Interface doesn't support scanning, you have to replace wlan0 with the interface specified after running ifconfig (e.g. wlp2s0 etc).

Solution 2:

Linssid

LinSSID is graphically and functionally similar to Inssider (Microsoft™ Windows®). It is written in C++ using Linux NL80211 tools, Qt5, and Qwt 6.1.

You can use this Linssid:

sudo apt install linssid

It will show you ssid, mac, power signal, and graphic.