Сподобился прочитать /usr/share/doc/base-files/README И вам советую :)
Q. Ok, but how do I know which distribution I'm running? A. If you are running testing or unstable, then /etc/debian_version is not a reliable way to know that anymore. Looking at the contents of your /etc/apt/sources.list file is probably a much better way. Ю.
