I'm doing a project regarding RSSI and I have to retrieve the signal level of a particular WiFi SSID that I'm working on using linux command line.
I've made use of iwlist scanning command but I just couldn't get it to display the values that I want by using grep to print only the SSID name, Quality and Signal Level.
Commands that I've tried that didn't gave me the results I wanted:
iwlist INTERFACE scanning essid SpecificESSID | grep Signal
iwlist INTERFACE scanning essid SpecificESSID | grep ESSID,Signal
iwlist INTERFACE scan | grep 'ESSID:"SpecificESSID"\|Signal level' - This almost worked but it displayed other networks signal level as well and i only need one specific network information.