#!/bin/bash

echo
echo
echo "Enter the WNIC you wish to test the quality of:"
read nic
echo
if [ "$nic" == 'exit' ]
    then
        break
fi

if [ "$nic" == 'quit' ]
    then
        break
fi

echo "Please be patient, script working..."
sudo iwlist $nic scanning > wireless_network_list


if [ -n "$nic" ]
    then
        echo
        total=0
        echo "How many times would you like to test the wireless quality?"
        read count
        current=0

        while [ $current -le $count ]
        do
            sudo iwconfig $nic > wireless_details
            quality=$(grep "Quality" wireless_details)
            let total += $(quality:32:2)
            let current += 1
        done

        let total /= $count

        echo "The average signal strength was $total and the signal level is $(quality:43}"

        string=$(grep "ESSID:" wireless_details)
        echo "$nic is connected to the network ${string:31}"

        count=$(grep -c "ESSID" wireless_network_list)
        echo "There are $count networks within range"
        echo
    else
        echo "You did not enter a NIC"
    fi
fi

rm wireless_network_list
rm wireless_details