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Exactly what does Ubuntu Core consist of?

I know of a similar project called Ubuntu Mini Remix, which, while not an official Ubuntu project, is known to contain:

What does Ubuntu Core contain?

What are the differences between the purposes of these two projects?

I would like to make sure of this before I choose a starting point to build my own Ubuntu derivative.

Eric Carvalho
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Nickolai Leschov
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1 Answers1

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Check the release directory for the ".manifest" files which list every package (eg. ubuntu-core-12.04.4-core-amd64.manifest). Ubuntu Core is just a minimal install of Ubuntu, you could make something very similar yourself by running:

mkdir chroot
debootstrap --arch=amd64 trusty chroot http://archive.ubuntu.com/ubuntu/

Ubuntu Core is just a minimal rootfs of around 60MB size whereas Ubuntu Mini Remix is a 200MB iso live image.

bain
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  • Why isn't `linux` kernel listed in the **manifest**? What files are supposed to be listed there? – Nickolai Leschov Jun 14 '14 at 16:35
  • All of the packages that are installed in the root filesystem. The linux kernel probably isn't there because it isn't installed in the root filesystem - either users are expected to boot it separately from whatever bootloader they are using, or just install or build their own kernel. – bain Jun 14 '14 at 17:26
  • Keep in mind that the **compressed** [rootfs of "Ubuntu Core"](http://cdimage.ubuntu.com/ubuntu-core/releases/) has almost doubled in size (amd64) [**63M**](http://cdimage.ubuntu.com/ubuntu-core/releases/14.04/release/) since release 14.04, before 14.04 core rootfs was [**38M**](http://cdimage.ubuntu.com/ubuntu-core/releases/13.10/release/). – Pro Backup Aug 15 '14 at 09:01
  • And "Ubuntu Core" 15.04 (snappy) amd64 doubled again to **132M** after decompression, and 47M before decompression. – Pro Backup Jul 30 '15 at 13:59