Desintalando paquetes en Ubuntu Server

Listando todos los instalados

root@asterisk-dominicana:~/my_scripts# dpkg --get-selections | grep -v deinstall | less



Filtrando
root@asterisk-dominicana:~/my_scripts# dpkg --get-selections | grep -v deinstall | grep -i uno
python-uno                                      install
uno-libs3                                       install
unoconv  

Removiendo  un paquete en especifico
root@asterisk-dominicana:~/my_scripts#apt-get --purge remove uno-libs3

Tambien 

root@asterisk-dominicana:~# apt-get autoremove  vlc

http://askubuntu.com/questions/17823/how-to-list-all-installed-packages

http://askubuntu.com/questions/151941/how-can-you-completely-remove-a-package