# File daybook/mycgi/daybook/base/daybook_mod.rb, line 24
  def read_file(path_file)
    str = ""
    begin
      open(path_file, "r") do |s|
        str = s.read
      end
    rescue SystemCallError
      $stderr.print "IO failes: " + $!
      raise
    end
    return str
  end