def nowrite(value=nil)
      oldvalue = FileUtilsExt.nowrite_flag
      FileUtilsExt.nowrite_flag = value unless value.nil?
      if block_given?
        begin
          yield
        ensure
          FileUtilsExt.nowrite_flag = oldvalue
        end
      end
      oldvalue
    end
def nowrite(value=nil)
      oldvalue = FileUtilsExt.nowrite_flag
      FileUtilsExt.nowrite_flag = value unless value.nil?
      if block_given?
        begin
          yield
        ensure
          FileUtilsExt.nowrite_flag = oldvalue
        end
      end
      oldvalue
    end
Get/set the nowrite flag controlling output from the FileUtils
 utilities.  If verbose is true, then the utility method is
 echoed to standard output.

 Examples:
    nowrite              # return the current value of the
                         # nowrite flag
    nowrite(v)           # set the nowrite flag to _v_.
    nowrite(v) { code }  # Execute code with the nowrite flag set
                         # temporarily to _v_. Return to the
                         # original value when code is done.