MAC address Changer for MacOS

mac_address_changer.sh

#!/bin/bash

# Show the list of network interfaces
echo "Available network interfaces:"
networksetup -listallhardwareports | grep "Hardware Port"

# Prompt the user to enter the interface number
echo "Enter the number of the interface you want to change (e.g., 1 for en0): "
read interface_num

# Construct the interface name based on the number
interface_name="en${interface_num}"

# Get the current MAC address of the interface
current_mac=$(ifconfig "$interface_name" | grep "ether" | awk '{print $2}')

# Generate a random MAC address
generate_mac() {
  echo "Generating a random MAC address..."
  openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//'
}
random_mac=$(generate_mac)

# Ask the user whether to use the generated MAC address or enter a custom one
echo "The current MAC address of $interface_name is $current_mac."
echo "Do you want to use the generated MAC address $random_mac? (y/n) "
read use_random_mac

# Prompt the user to enter a custom MAC address if desired
if [[ "$use_random_mac" != "y" ]]; then
  echo "Enter the new MAC address (in the format xx:xx:xx:xx:xx:xx): "
  read new_mac
else
  new_mac=$random_mac
fi

# Change the MAC address of the interface
echo "Changing the MAC address of $interface_name to $new_mac..."
sudo ifconfig "$interface_name" ether "$new_mac"

# Verify the new MAC address
echo "Verifying the new MAC address..."
ifconfig "$interface_name" | grep "ether"

# Signature
echo "Script written by ChatGPT (ChatGPT)"