gistfile1.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'daemons'

RAILS_ROOT = File.expand_path(File.join(File.dirname($0), '..'))

options = {
  :dir_mode => :normal,
  :dir => File.join(RAILS_ROOT, %w(tmp pids)),
  :backtrace => true
}

Daemons.run_proc("job_runner", options) do
  require File.join(RAILS_ROOT, 'config', 'environment')

  Delayed::Worker.new.start
end