node-spoofmac
A very quick port of https://github.com/feross/SpoofMAC/ for OSX to Node.js.
$ npm install -g spoofmac
$ sudo spoofmac en0
Using random MAC address.
MAC address for en0 9b
Changed en0 (h/w: 31) from 9b to 53.
If both addresses are the same, run 'ifconfig en0 | grep ether' in a few seconds.
Most Macs: en0
is wired, en1
is wireless.
Air/retina Pro: en0
is wireless.