code: def tarbz(source_directory_path, output_file_full_path, silent=False):
      
      output_directory_path = output_file_full_path.rsplit("/", 1)[0]
      create_folders(output_directory_path)
      # Note: default compression for bzip is supposed to be -9, highest compression.
      full_tar_file_path = output_file_full_path + ".tbz"
      if path.exists(full_tar_file_path):
          raise Exception("%s already exists, aborting." % (full_tar_file_path))
      
      # preserve permissions, create file, use files (not tape devices), preserve
      # access time.  tar is the only program in the universe to use (dstn, src).
      tar_command = ("tar jpcfvC %s %s %s" %
                     (full_tar_file_path, source_directory_path, "./"))
      call(tar_command, silent=silent)
      return full_tar_file_path
docs: Tars and bzips a directory, preserving as much metadata as possible.
          Adds '.tbz' to the provided output file name.