phpservermon/puphpet/puppet/modules/puppi/lib/facter/last_run.rb

require 'facter'
Facter.add("last_run") do
  confine :kernel => [ 'Linux' , 'SunOS' , 'FreeBSD' , 'Darwin' ]
  setcode do
    Facter::Util::Resolution.exec('date')
  end
end