The script was designed to be called as a CGI script. It could be called by a form or simply by typing in http://yoursite.com/cgi-bin/scriptname.pl?pass=Tn9SG0s You can run it from the command line using ./script.pl pass=Tn9SG0s.
Anyway seeing you are on a *nix you could probably just do:
du -hs /home/*
For a bit more pizzaz try:
du -hs `du -bs /home/* 2>/dev/null |sort -nrk 1|head -20|cut -f 2`
Which will give you the sorted top twenty dirs (in /home in this example) with nice human readable sizes.
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