how to run webserver in rails

I explain step by step.
first open your terminal.

1.Then enter the following command on your terminal.

rails
(eg:- rails firstproject)

2.then create more folders.

3.then go to the your project folder.
cd
(eg:- cd firstprogramme)

4.then run the following command

ruby script/server

5.then open your browser insert the following address in your address bar.

http://localhost:3000

6.you will see your web server run