Hello Cuba!

Before getting started, we have to install Cuba. Use the

gem

 command:

$ gem install cuba

Now that Cuba is installed, it’s easy to create a Cuba application. Open your text editor of preference and create a file called

config.ru

with the following code:

require "cuba"Cuba.definedo on rootdo res.write("Hello, Cuba!") endendrun(Cuba)

---

You already have a functional Cuba application! To see it in action, type

rackup config.ru

 in the command line.Now open a browser and navigate tohttp://localhost:9292/. It should show a greeting message as shown below:

NOTE:

 To stop the web server, hit

Ctrl+C

 in the terminal window where it’s running. To verify the server has stopped youshould see your command prompt cursor again.