參考資料
- What is the difference between dpkg and aptitude/apt-get?
- Ubuntu 12.04 Wiki, APT-Get
- Ubuntu 16.04 Wiki, dpkg
- Ubuntu Wiki, AptGet/Howto
- [Wiki, deb (file format)](https://en.wikipedia.org/wiki/Deb_(file_format))
- debian, APT HOWTO(Ch)
- debian, APT User's Guide
- debian, aptitude user's manual
- Ubuntu Wiki, Repositories/CommandLine
- Ubuntu Wiki, SourcesList
- man page of update-alternatives