I've asked a question on stackexchange, here is the link: http://unix.stackexchange.com/questions/307231/md5sum-in-debians-official-directory?noredirect=1#comment540093_307231
Beside, has multi-arch has desktop environment embeded? It seems that it only has xorg but no gome, lxde etc.. I also opened an thread at stackexchange, but this question you don't need to answer there. http://unix.stackexchange.com/questions/307203/my-debian-installation-has-no-desktop-enviroment-and-no-internet-access
