Track filesystem changes on a lower level with Guard

watch.rb

require 'guard'

listener = Guard::Listener.select_and_init '/',
  :relativize_paths => false,
  :ignore_paths => ['Caches', 'Saved Application State']

listener.on_change do |files|
  p files
end

listener.start

stopped = false
trap(:INT) { stopped = true }

loop do
  sleep 0.1
  break if stopped
end