"UNIX is not broken. Your head, on the other hand, is"
Wow, childish personal attacks. How droll.
"Number of correct scripts is not important metric. Number of bad scripts is"
I would think that the percentage of each would (possibly) be a useful metric. But, what is the damage from these "bad scripts"? If you are writing shell scripts that MUST be absoutely bullet-proof from bad input, perhaps because they run setuid-root, then you are already making a much worse mistake than the possible bugs in the script.
Still don't understand the FAT reference. Sorry, maybe I'm just slow.