root@dorian:/home/tom/bzip2-1.0.4# dpkg --purge bzip2
dpkg: dependency problems prevent removal of bzip2:
 ubuntu-minimal depends on bzip2.
 file-roller depends on bzip2 (>= 1.0.1).
dpkg: error processing bzip2 (--purge):
 dependency problems - not removing
Errors were encountered while processing:
 bzip2