Find which Debian packages use up your space
This How-to applies to: any
A simple shell command line to get the top space users in Debian
From http://perldition.org/blog/view/what_package_is_eating_up_my_disk_space__04_10_06_23_18_05_
grep-status -nsInstalled-size,Package -F Status ' installed' $STATUS \
| perl -p00l12 -e 's/\n/ /' \
| sort -rn \
| head --lines=$LINES