Bash function to randomize MAC address and hostname on OS X. Could live in ~/.bash_profile

gistfile1.txt

function mask(){
	# Changes MAC address to a random one and sets the hostname to a random word
	# Tested on OS X 10.9 (Macbook Pro)
	# Based on http://blog.kejsarmakten.se/all/software/2013/08/30/spoof-mac-on-osx.html
	# and http://osxdaily.com/2010/09/06/change-your-mac-hostname-via-terminal/
	# Note: neither are permanent (a reboot resets both)
	# For a permanent change to hostname: sudo scutil –-set HostName NEWHOST
	# Consider using SpoofMAC: https://github.com/feross/SpoofMAC
    NEWMAC=$(openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//')
    echo "Changing MAC " $(ifconfig en0 | grep ether)
    sudo ifconfig en0 ether $NEWMAC
    echo "New MAC is:" $(ifconfig en0 | grep ether)
    NEWHOST=$(sed `perl -e "print int rand(99999)"`"q;d" /usr/share/dict/words)
    echo "Changing hostname: " $(hostname)
    sudo hostname $NEWHOST
    echo "New hostname is:" $(hostname)
}