I thought about building the sorting but decided
against it ("One tool does one thing"). I figure that I'll leave
sorting to 'sort'. ;-)
As to 'df' walking the tree twice, I looked at that as well. In my tests, it looked like
the results were cached somewhere, and thus 'df -sk . *' is quite fast. A prior version of the
script did something horrible along the lines of: 'du -sk *|perl -e `$sum=du -sk .` while(<>) {....}, so this is an improvement already.
This is pretty quick, and I use it on 40GB raid arrays. :-)
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