# Unicorn specific
  w.pid_file = "<%= engine.directory + "/tmp/pids/unicorn.pid" %>"
  w.stop = "kill -QUIT `cat #{w.pid_file}`"
  w.restart = "kill -USR2 `cat #{w.pid_file}` && sleep 20 && kill -QUIT `cat #{w.pid_file}.oldbin`"
  w.behavior(:clean_pid_file)