Linux Startup MAC address Randomizer

#! bin/bash
# Randomises your wlan0 MAC address on system startup
# on Ubuntu\Debian platforms - Must be run as root.
# Warning: Do not use if you assign static IP routing.
# Kind Regards,
# 264nm


isRoot() {
    # Check if the current user is root or not !
    if [ $EUID = 0 ]; then
        return 0
    else
        return 1
    fi
}

yesRoot() {
#Creates init.d file

touch /etc/init.d/macchangerstartup

#Checks for macchanger package and installs

echo "Root confirmed"


sudo apt-get -y install macchanger

echo "Creating startup script"



echo "
#! bin/sh

ifconfig wlan0 down
#ifconfig wlan1 down
#ifconfig eth0 down
#ifconfig eth1 down

macchanger -r wlan0
#macchanger -r wlan1
#macchanger -r eth0
#macchanger -r eth1

ifconfig wlan0 up
#ifconfig wlan1 up
#ifconfig eth0  up
#ifconfig eth1 up

"  > /etc/init.d/macchangerstartup

chmod 755 /etc/init.d/macchangerstartup
chmod +x /etc/init.d/macchangerstartup

update-rc.d macchangerstartup defaults

sleep 5

echo "Process Complete... Confirm functionality

and compare MAC address by rebooting."


}

if [ isRoot = 0 ]; then
    exit
else yesRoot
fi