MAC Spoofer

#!/bin/bash
clear
RED=$(tput setaf 1 && tput bold)
GREEN=$(tput setaf 2 && tput bold)
STAND=$(tput sgr0)
BLUE=$(tput setaf 6 && tput bold)
echo $RED"##################################################"
echo $RED"##       This script will Help Prep Your        ##"
echo $RED"##    Wireless Card for Penetration Testing     ##"
echo $RED"##     We are going to Spoof your MACs and      ##"
echo $RED"## Optionally Place Your Card into Monitor Mode ##"
echo $RED"##################################################"
echo
echo "Press ENTER to Continue to the MAC Address Spoofing"
echo "Press 'm' to Place Interface into Monitor Mode as Well"
read choice
echo $STAND""
if [[ $choice = "" ]]; then
echo
iwconfig
echo
echo $RED"What is your WLAN device?"
echo $STAND ""
read IFACE
echo $RED"Please Specify the MAC to be Spoofed: xx:xx:xx:xx:xx:xx"
echo $RED"Enter R for random MAC"
echo $STAND ""
read MMAC
if [ ${MMAC,,} = "r" ]; then
ifconfig $IFACE down
macchanger -r $IFACE
ifconfig $IFACE up
else
ifconfig $IFACE down
macchanger -m $MMAC $IFACE
ifconfig $IFACE up
fi
if [ ${MMAC,,} = "r" ]; then
echo $BLUE"-""Your MAC has been set to a Random Value"
else
echo $BLUE"-""Your MAC has been set to $MMAC"
fi
else
if [ ${choice,,} = "m" ]; then
echo
iwconfig
echo
echo $RED"What is your WLAN device?"
echo $STAND ""
read IFACE
echo $RED"Please Specify the MAC to be Spoofed: xx:xx:xx:xx:xx:xx"
echo $RED"Enter R for random MAC"
echo $STAND ""
read MMAC
if [ ${MMAC,,} = "r" ]; then
ifconfig $IFACE down
macchanger -r $IFACE
ifconfig $IFACE up
airmon-ng start $IFACE
echo
sleep 1
ifconfig mon0 down
macchanger -r mon0
ifconfig mon0 up
else
ifconfig $IFACE down
macchanger -m $MMAC $IFACE
ifconfig $IFACE up
airmon-ng start $IFACE
echo
sleep 1
ifconfig mon0 down
macchanger -m $MMAC mon0
ifconfig mon0 up
fi
if [ ${MMAC,,} = "r" ]; then
echo $BLUE"-""Your MAC has been set to a Random Value"
else
echo $BLUE"-""Your MAC has been set to $MMAC"
fi
echo $BLUE"-""$IFACE Has Been Placed Into Monitor Mode"
echo $STAND ""
fi
fi
echo $STAND""