Quick overview over nearby wireless lan hotspots

Here is a useful little command to get a quick overview over nearby hotspots:

 iw dev wlan0 scan  | grep 'SSID\|signal\|primary channel'
        SSID: 5g_station
                 * primary channel: 36
        signal: -42.00 dBm
        SSID: 2g_station
                 * primary channel: 6
        signal: -72.00 dBm
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