ruby

Ruby programming language interpreter. See also: gem, bundler, rake, irb. More information: https://www.ruby-lang.org.

• Execute a Ruby script:
  ruby {{script.rb}}
• Execute a single Ruby command in the command-line:
  ruby -e {{command}}
• Check for syntax errors on a given Ruby script:
  ruby -c {{script.rb}}
• Start the built-in HTTP server on port 8080 in the current directory:
  ruby -run -e httpd
• Show the version of Ruby you are using:
  ruby -v