Wireless LAN Signal Strength Analysis Commands

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For Windows:
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netsh wlan show networks mode=ssid

and

netsh wlan show networks mode=bssid


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For Linux:
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To display WiFi signal strength in the terminal, you can run this command:

• watch -n 1 "awk 'NR==3 {print \"WiFi Signal Strength = \" \$3 \"00 \"}''' /proc/net/wireless"

• watch -n 1 cat /proc/net/wireless

• iwconfig "Interface-Name-Here" 

        example:

        iwconfig wlan0
        or
        iwconfig wlan1
        or
        watch -n 1 iwconfig wlan1    [for continuos observation of the link]

• Wifi Signal Strength(Link Quality) in Percentage:

  while [ 1 ];do clear;echo "WiFi Signal Strength (Link Quality)";a=$(/sbin/iwconfig wlan1 | grep "Link Quality" | awk '{print $2}' | sed 's/.*\=//'); echo $(($((${a%/*} * 100)) / ${a#*/}))%;sleep 1;done