Change MAC address on macOS.

mac-spoofing.sh

#!/bin/zsh
if [[ $EUID -ne 0 ]]; then
echo "This script must be run with sudo." >&2
exit 1
fi

if [[ "$1" == "-h" || "$1" == "--help" ]]; then
echo "Usage: sudo ./script.sh <interface> <MAC_addr>"
echo "Sets the MAC address for the specified network interface."
echo "Arguments:"
echo " <interface> Network interface to set MAC address for."
echo " <MAC_addr> New MAC address to set."
exit 0
fi

if [[ -z "$1" || -z "$2" ]]; then
echo 'Missing <interface> and/or <MAC_addr>'
echo "Use -h or --help option for usage information."
exit 1
fi

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -z
ifconfig "$1" lladdr "$2"
ifconfig "$1" ether "$2"