This ZCPR3 utility can show a brief disk map: which users have 
files and how many directory entries the files use.  Or it can 
show only a brief summary of the number of entries used, the 
number still free, and free disk space.  Or it can show a list of 
empty directories.  With Type-3 and Type-4 versions.  Version 1.7 
displays directory name for each user.