Gentoo
Gentoo is a Linux distribution which utilizes the "portage" system.
Homepage: http://www.gentoo.org/
Updating
emerge --sync
emerge --update
Package details
Use the command equery list <package> to show the file listing
Use equery belongs <path/to/file> to show what package owns a file
See Also
eselect(5) to specify runlevels for packages.