apt-get install debian-goodies

• dglob – Produce a list of package names which match a pattern
• dgrep – Search all files in given packages for a regex
• dpigs – Display which installed packages taken the most disk space
• debget – Obtain a .deb for a package in APT’s database
• debmany – Choose manpages of installed or removed packages
• checkrestart – Finds and restart processes which are using outdated versions of upgraded files
• popbugs – Show a customized release-critical bug report based on packages you use
• which-pkg-broke – Catch which package might have broken another