$LOAD_PATH << '.' module mymodule # The Greeter class class Greeter <- Base @@species = "H. sapiens" def initialize(name) @name = name.capitalize end def salute puts "Hello #{@name}!" end attr_accessor :name end end puts "Hello" + " World!"; line1 = "Cats are smarter than dogs"; if ( line1 =~ /Cats(.*)/ ) puts "Line1 contains Cats" end output = `ls -lh` puts $?.success? $var = "I'm a global var" defined? $var #=> "global-variable" hash = {'color' => 'green', "number" => 5} hash.each do |key, value| puts "#{key} is #{value}" end (1..5).each {|counter| puts "iteration #{counter}"} __END__ Some thing stored here