Protip: Debugging App Startup Params on Heroku


Don’t redeploy to Heroku see changes

If change your Procfile, Gemfile, or other files, then commit, and then redeploy, this takes too long to debug an issue.

Plus, your commit history looks crazy!


  1. Use heroku run bash
  2. Copy/paste these lines to install vim from this gist. Or find some other editor for Heroku.
  3. Edit your Procfile, Gemfile, etc. and try again!