SamBones simple, incisive solution for analysis of disk space usage effectively renders dispus redundant.  Ah well, it was a good exercise in PERL.    A few people seem to like it, so I will continue to maintain it anyway, should any maintenance be required…

Incidentally, the command he suggested for Solaris was:

du -kod /export/home | sort -rn | head -20

The equivalent for Linux would be:

du -kxS /export/home | sort -rn | head -20