I get this message with commands such as man printf :
This system has been minimized by removing packages and content that are not required on a system that users do not log into. To restore this content, including manpages, you can run the 'unminimize' command. You will still need to ensure the 'man-db' package is installed.
If I execute unminimize, I get this :
mv: cannot move '/etc/dpkg/dpkg.cfg.d/excludes' to '/etc/dpkg/dpkg.cfg.d/excludes.dpkg-tmp': Permission denied