Loops, conditions & script file

    if @names.nil?  #Check if object is null/not initialized

        puts "@names not yet initialized"   

    elsif @names.respond_to?("join")   #Check if object is a list

        puts "@names seems to have more than 1 element "

    else

        puts "only element is #{@name}"

    end

    names=["ABC","DEF","GHI"]

    names.each do |name|

        puts "Hello #{name}"

    end

ruby ruby_script_example.rb   

ruby ruby_script_example.rb Rahul Rohit