anchor.diff:  
   is_my_os() ->
       case os:type() of
  -        {unix, darwin} ->
  -            true;
           {unix, linux} ->
               true;
           _ ->
  
positive.code: 
  check_disk_space({unix, linux}, Port) ->
      Result = my_cmd("/bin/df -alk", Port),
      check_disks_linux(skip_to_eol(Result));
  check_disk_space({unix, darwin}, Port) ->
      Result = my_cmd("/bin/df -i -k -t ufs,hfs", Port),
      check_disks_susv3(skip_to_eol(Result)).
  
  check_disks_linux("") ->
      [];
  
negative.code:             check_disks_linux(skip_to_eol(Str))
      end.
  
  %%--Auxiliary-----------------------------------------------------------
  
  skip_to_eol([]) ->
  