1. st_blksize might be different for regular files and symlinks; hence

1. st_blksize might be different for regular files and symlinks; hence
   ignore differences in the twelfth element of the stat() array.

2. The 'test.file' is created by the script, thus the owner of the file
   is the user id executing the script.  A mode of 0654 does not grant
   the owner the right to execute the file and therefore, the correct
   output here is "not executable."