change your wifi mac address to something random on os x yosemite

newmac.sh

newmac() {
    m0=$(ifconfig en0 | grep ether | sed 's/\s*ether //g' | sed 's/ $//g'  | sed 's/ /:/g')
    sudo /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -z
    m1=$(od -An -N6 -t xC /dev/urandom | sed -e 's/^\s*//g' | sed -e 's/\s*$//g' |  sed -e 's/  /:/g') 
    echo "changing mac from $m0 to $m1"
    sudo ifconfig en0 ether $m1
    sudo networksetup -detectnewhardware
    echo "clearing safari"
    clearsafari
}

clearsafari() {
    mv ~/Library/Safari ~/Desktop/Safari-`date +%Y%m%d%H%M%S`; \
        rm -Rf ~/Library/Caches/Apple\ -\ Safari\ -\ Safari\ Extensions\ Gallery; \
        rm -Rf ~/Library/Caches/Metadata/Safari; \
        rm -Rf ~/Library/Caches/com.apple.Safari; \
        rm -Rf ~/Library/Caches/com.apple.WebKit.PluginProcess; \
        rm -Rf ~/Library/Cookies/Cookies.binarycookies; \
        rm -Rf ~/Library/Preferences/Apple\ -\ Safari\ -\ Safari\ Extensions\ Gallery; \
        rm -Rf ~/Library/Preferences/com.apple.Safari.LSSharedFileList.plist; \
        rm -Rf ~/Library/Preferences/com.apple.Safari.RSS.plist; \
        rm -Rf ~/Library/Preferences/com.apple.Safari.plist; \
        rm -Rf ~/Library/Preferences/com.apple.WebFoundation.plist; \
        rm -Rf ~/Library/Preferences/com.apple.WebKit.PluginHost.plist; \
        rm -Rf ~/Library/Preferences/com.apple.WebKit.PluginProcess.plist; \
        rm -Rf ~/Library/PubSub/Database; \
        rm -Rf ~/Library/Saved\ Application\ State/com.apple.Safari.savedState
}