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        if @env_os == 'windows'
          @scandir = self.scandir.gsub(/\\/, '/')
        else
          @scandir = self.scandir
        end
        all_full_rels = Dir["#{@scandir}/*"]
        all_rels = []
        all_full_rels.each do |frel|
          if is_dir_exist(frel)
            t_rel = File.basename(frel).gsub(/\/$/, '')
            all_rels.push(t_rel)
          end
        end