Via Minko Gechev's tweet. Saving in an org block, just because…
changeMAC() {
local mac=$(openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//')
ifconfig en0 ether $mac
ifconfig en0 down
ifconfig en0 up
echo "Your new physical address is $mac"
}
changeMAC
#+RESULTS:
Your new physical address is b4:b2:f8:77:bb:87
ps. Also see Execute org blocks as root.
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