Rails server does not start by command “Rails s”

Question

I\'m new to ruby and rails and i installed rails in to the ubuntu. but when i go to the start server by typing \"rails s\" it doesn\'t start and comes following message . bu

Answer 1

I ran into this problem and was confused for a minute until I realized I accidentally deleted my bin folder.

How to fix it:

1. Backup your app.
2. cd back out of the root of the Rails app.
3. Run rails new name_of_your_app -- make sure it's the same name as the directory that already exists.
4. Rails will build the folder again, asking you if you want to overwrite files, hit n for "no" each time it asks.
5. Rails will add the missing bin files, whereas if you hit n for everything else it will keep everything else.
6. In my case I was using HAML with an application.html.haml file, and so Rails also generated an application.html.erb file for me in views/layouts which I didn't need and so deleted. Notice any other files that were generated and delete any you don't want.
7. Run rails s to start the WEBrick server.