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It seems to me that Ubuntu has to main categories of packages.

There are the officially Ubuntu packages supported and maintained by Canonical itself: Ubuntu Core. And there are the freetime maintained community packages in "universe".

Am I right so far?

How is it decided if a package goes to universe or core?

buhtz
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1 Answers1

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The decision process is simple:

  • If the software is required for the install process (like parted)
  • Or will be one of the final applications on the stock installed system (like network-manager or libreoffice)
  • Or one of their dependencies (like openssl)

...then it goes into Main.

All other open source software with a compatible license goes into Universe.

In other words, when you install Ubuntu and first reboot into the newly-installed system (no customization), 100% of your installed packages are in Main...and very little else is in Main.

user535733
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