dpkg -i <filename> = install package
dpkg -r <filename> = remove package
dpkg -P <filename> = remove package + config files
dpkg -I <filename> = show some info about the package
dpkg -i <filename> = install package
dpkg -r <filename> = remove package
dpkg -P <filename> = remove package + config files
dpkg -I <filename> = show some info about the package