solution.sh

#!/bin/bash


statuscheck()
{
	if [ $1 -ne 0 ]
	then
		echo $2
		echo "Exiting...."
		exit 0
	fi
}

CURR=$(cd "$(dirname "$0")" ; pwd -P )
echo $CURR
echo -n "Enter the sudo password : "
read -s password

cmd=$(echo $password | sudo -S lshw -C network -short 2>/dev/null | grep Wireless | awk '{print $2 " " $4}')
if sudo -n true ; then
        echo "I got the sudo password"
else
        echo "Wrong sudo password"
        echo "Either replace the password in this script or give password via command line arguments"
        echo "Exiting...."
        exit 0
fi

#the return value is a single string having a space
#splitting by space and storing in a array
cmd=($cmd)
echo "Wifi Interface: "${cmd[0]}
echo "Wifi Driver: "${cmd[1]}

if [ -d "rtlwifi_new" ]
then
	rm -rf rtlwifi_new
fi

git clone https://github.com/kindlerprince/rtlwifi_new.git 
statuscheck $? "Failed to cloned Repository"


cd rtlwifi_new
make
statuscheck $? "Error occured in make"
sudo make install
statuscheck $? "Error occured in make"
sudo modprobe -rv ${cmd[1]}
sudo modprobe -v ${cmd[1]} ant_sel=2
sudo ip link set ${cmd[0]} up
sudo iw dev ${cmd[0]} scan
make clean

echo "Wifi Driver Installed Successfully"