Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Considering the following command:

# apt-get --simulate --show-upgraded upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
 libimobiledevice0 libpam-ck-connector libparted0debian1
Inst libimobiledevice0 [0.9.7-1ubuntu1] (0.9.7-1ubuntu1.2 Ubuntu:10.04/lucid-updates)
Inst libpam-ck-connector [0.4.1-3ubuntu1] (0.4.1-3ubuntu2 Ubuntu:10.04/lucid-updates)
Inst libparted0debian1 [2.2-5ubuntu5.1] (2.2-5ubuntu5.2 Ubuntu:10.04/lucid-updates)

I can read an Inst line as the following:

Inst <package> [<oldversion>] (<newversion> Ubuntu:10.04/lucid-updates)

Can someone tell me where the Ubuntu:10.04/lucid-updates comes from? - Considering an own repository, how is this configurable?

share|improve this question
up vote 0 down vote accepted

If you read your /etc/apt/sources.list you will see some lines there that look like these

## Major bug fix updates produced after the final release of the
## distribution.
deb lucid-updates main restricted
deb-src lucid-updates main restricted

that is where the updated lists are coming from.

apt-get will read that config file when you issue apt-get update, download the new package lists and when you issue and apt-get upgrade it will download the updated packages for your system based on those lists.

The information for the lists is kept under /var/lib/apt/lists/*_Release files

Here is an example from the file security.ubuntu.com_ubuntu_dists_oneiric-security_Release in that directory:

Origin: Ubuntu
Label: Ubuntu
Suite: oneiric-security
Version: 11.10
Codename: oneiric
Date: Tue, 17 Jan 2012 16:38:19 UTC
Architectures: amd64 armel i386 powerpc
Components: main restricted universe multiverse
Description: Ubuntu Oneiric Security

So in your case the Ubuntu would come from the Origin and 10.04 would come from the Version and the lucid-updates would come from Suite keys.

share|improve this answer
Hi Bruno, thanks for your fast reply. I do however understand the general process of an apt-get upgrade. In this case I'm wondering where apt-get takes the Ubuntu:10.04/lucid-updates part from. I cannot explain to myself where especially the Ubuntu:10.04 part comes from. The last part (lucid-updates) could come from the sources.list file. I hope you can understand my issue now ;) – timbooo Jan 24 '12 at 11:52
Hi timbooo, I have updated the answer with more details on the information you are looking for. – Bruno Pereira Jan 24 '12 at 12:29
Thank you, that's what I was looking for ;) – timbooo Jan 24 '12 at 14:22

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.