* Clean up non-existent data
# apt-get autoclean
* Update list
# apt-get update
* Install/update a package
# apt-get install
* review dist-upgrade prior:
# apt-get -Vsu -o Debug::pkgProblemResolver=yes dist-upgrade
* Apply updates
# apt-get -Vu upgrade
* Upgrade all dependencies
# apt-get -Vu dist-upgrade
* Search cache
# apt-cache search
* Remove and purge packages
# apt-get --purge remove
DPKG
* Install/Update package
# dpkg -i
* Check listing of installed packages
# dpkg -l *
* file belongs to
# dpkg --search /path/to/file
* List of file in package
#dpkg -L
* Info about package
# dpkg -s
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source:http://linuxpoison.blogspot.com/2008/09/135781757110212.html