Show space used by deb packages installed sorted by size (ubuntu, debian and like)

dpkg-query -W -f='${Installed-Size;10}t${Package}n' | sort -k1,1n

Show all deb packages installed on the system

dpkg -l

If you have a debian system and the XMMS in that has a bug that hides the fonts in dailog, try this command…

dpgk-reconfigure locales

Install a package using dpkg in Debian linux

dpkg -i package