test.rb

module Util
  class << self
    def first_line file_name
      File.open(file_name, 'r') do |f|
        p f.gets
      end
    rescue Errno::ENOENT => ex
        handle_error(ex)
    end

    def handle_error ex
      p "Do the file creation: #{ex.to_s}"

    end
  end
end

Util.first_line 'version.txt'