Ever wonder what program or package eats the most of your “/usr” partition?  Here is the way to find the most gluttonous package on Debian/Ubuntu:

$ sed -ne '/^Package: \(.*\)/{s//\1/;h;};/^Installed-Size: \(.*\)/{s//\1/;G;s/\n/ /;p;}'  /var/lib/dpkg/status | sort -rn