Restart Rack when files change.
Latest commit ad9f78a Dec 30, 2016 @dblock committed on GitHub Merge pull request #25 from michaelherold/fix-builds-for-older-rubies
Fix builds for older rubies


Gem Version Build Status Dependency Status Code Climate

Want to restart your Rack development with rackup whilst you work? Now you can!

guard 'rack', :port => 9292 do


  • :cmd is the command to run to mount the Rack application (default rackup).
  • :host is the host ip address to run on (default
  • :port is the port number to run on (default 9292).
  • :environment is the environment to use (default development).
  • :start_on_start will start the server when starting Guard (default true).
  • :force_run kills any process that's holding open the listen port before attempting to (re)start Rack (default false).
  • :daemon runs the server as a daemon, without any output to the terminal that ran guard (default false).
  • :debugger runs the server with the debugger enabled (default false). Required ruby-debug gem.
  • :timeout waits this number of seconds when restarting the Rack server before reporting there's a problem (default 20).
  • :server serve using server (one of webrick, mongrel or thin).
  • :config run the specified rackup file (default


Fork the project. Make your feature addition or bug fix with tests. Send a pull request. Bonus points for topic branches.

Copyright and License

MIT License, see LICENSE for details.

(c) 2012-2015 Daniel Doubrovkine and Contributors.