On Ubuntu there is a /etc/apt/sources.list.d/ directory and files included there are automatically loaded by apt. Google Chrome uses this mechanism and it seem

On Ubuntu there is a /etc/apt/sources.list.d/ directory and files included there are automatically loaded by apt. Google Chrome uses this mechanism and it seems to work well. You install the .deb package manually the first time and then the package manager will update it automatically. I thought that this solution was really great when I saw it.