anchor.diff:  
       %% Verify contents of extracted file.
       {ok, Bin} = file:read_file(Name),
  -    true = match_byte_list(X0, binary_to_list(Bin)),
  +    RandomBytes = Bin,
   
       %% Verify that Unix tar can read it.
       case IsUstar of
  
positive.code:     Name = filename:join(TempDir, Prefix++SizeList),
  
      %% Create a file and archive it.
      X0 = erlang:monotonic_time(),
      ok = file:write_file(Name, random_byte_list(X0, Size)),
      ok = erl_tar:create(Archive, [Name]),
      ok = file:delete(Name),
  
  
negative.code: 	{win32, _} -> lists:concat(["cmd /c",  Cmd]);
  	{unix, _}  -> lists:concat(["sh -c '",  Cmd,  "'"])
      end.
  
  %% Test the 'atomic' operations: create/extract/table, on compressed
  %% and uncompressed archives.
  