octave: X11 DISPLAY environment variable not set
octave: disabling GUI features
error: writing file '/.octave_hist': Read-only file system
error: ignoring const octave::execution_exception& while preparing to exit

    1   2   1
   4   0   2
   1   1   1   1
   1   1   1   1
   1   1   1   1
   1   1   1   1
    1    2    3    4    5    6    7
    8    9   10   11   12   13   14
   15   16   17   18   19   20   21
   22   23   24   25   26   27   28
   29   30   31   32   33   34   35
   36   37   38   39   40   41   42
   43   44   45   46   47   48   49

   1   2   1
   4   0   2
   1   1   1   1
   1   1   1   1
   1   1   1   1
   1   1   1   1
    1    2    3    4    5    6    7
    8    9   10   11   12   13   14
   15   16   17   18   19   20   21
   22   23   24   25   26   27   28
   29   30   31   32   33   34   35
   36   37   38   39   40   41   42
   43   44   45   46   47   48   49