SYNOPSIS
$ gem install sysuuid
irb> require 'sysuuid'
irb> sysuuid #=> "4b7067bd-928b-4656-9960-8a58edc6ff02"
irb> sysuuid #=> "3cb722b9-7776-4198-bdd2-dcd228716658"
DESCRIPTION
Uses uuid_generate from e2fsprogs, which comes standard
with OS X and Linux.
It's over 2000 times faster than shelling out to uuidgen.
AVAILABILITY
http://github.com/dsturnbull/sysuuid