Ruby!?

Question

where can we use ruby!?
how we can use it!?
why ruby?

Answer 1

Build powerful back-end systems with Ruby on Rails, Github uses this language, Rails is one of the reasons (maybe the main reason) why Ruby is so popular.

Build powerful security IT framework, Metasploit is written in Ruby.

From: https://stackoverflow.com/questions/1376592/what-is-ruby-used-for-besides-rails

"It has been used across the board for everything from web applications, to web servers themselves, to intelligent graphing libraries, to picture recognition engines, to threaded database servers, to low-level system utilities."