Hello. I'm using an du 4.0q program and I'm persuaded that its function of excluding files or subdirectories does not work properly. I have Debian linux and in man/info pages is following description : (according my problematic usage) --exclude=PAT ... --exclude='/usr/src/*' this would exclude all files and subdirectories in /usr/src .... and : just files in /usr/src are excluded, nothing more .... .... yours faithfully Zdenek Maxa, Czech Republic