I've been peeking into the ubuntu respository and I see four folders, multiverse, universe, restricted and main. What do they represent?
From the Ubuntu documentation:
The repository components are:
Main - Officially supported software.
Restricted - Supported software that is not available under a completely free license.
Universe - Community maintained software, i.e. not officially supported software.
Multiverse - Software that is not free.
The Ubuntu Desktop team manages the
gnome-terminalpackage, it is officially supported and in the
bcmwl-kernel-source(the Broadcom wireless driver) is in
restricted, since it is a supported, but proprietary, driver.
Community written software that is not officially supported (for example, the game
supertuxkart) is in the
ubuntu-restricted-extras(which contains proprietary codecs that allow you to play media files, including flash player) are in the
multiverserepository because they are not free and their restrictive licenses prevent inclusion in the default package set.
Ubuntu provides four different official software repositories:
Main – Officially Supported, Open-Source Software:
Licence: Open Source
Updates: Canonical provides critical updates.
Restricted – Officially Supported, Closed-Source Software:
Updates: Canonical provides critical updates supplied by the developers.
Universe – Community-Maintained, Open-Source Software:
Licence: Open source
Updates: Canonical does not provide update.
Some updates may be provided by the Ubuntu community.
Multiverse – Unsupported, Closed-Source and Patent-Encumbered Software:
Updates: Canonical does not provide updates.
Some updates may be provided by Ubuntu community.
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