And this differs from the more dependable and useful kernel-based quota and du mechanisms how? Btw, this obviously only checks for stuff in the user's home directory hierarchy when he could have things all around the file system, not to mention that you don't even check if the files you actually counted belong to the user.

Is this something to create a report? You could have just backticked "quota" and read the relevant stats in from there- plus users would be prohibited from using more than they would be allocated.

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