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I have installed ubuntu, 12.04 lts, on my chromebook via chroot and I want to add the backports repository to my sources.list file.

The problem I have is that I cannot figure out what is the correct address for the repository

currently my sources.list file contains:

deb http://ports.ubuntu.com/ubuntu-ports/ precise main restricted universe multiverse

deb-src http://ports.ubuntu.com/ubuntu-ports/ precise main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ precise-updates main restricted universe multiverse

deb-src http://ports.ubuntu.com/ubuntu-ports/ precise-updates main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ precise-security main restricted universe multiverse

deb-src http://ports.ubuntu.com/ubuntu-ports/ precise-security main restricted universe multiverse

I thought I needed to add:

deb http://ports.ubuntu.com/ubuntu-ports/ precise-backports main restricted universe multiverse

deb-src http://ports.ubuntu.com/ubuntu-ports/ precise-backports main restriced universe multiverse

but that returns the following error when I try 'apt-get update'

W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/precise-backports/Release  Unable to find expected entry 'restriced/source/Sources' in Release file (Wrong sources.list entry or malformed file)

I've tried several other combinations of paths without any success.

I'm sure this is a trivial mistake, but I don't know where to go from here.

What is the correct repository to use for precise-backports when using a ARM architecture?

Thanks in advance.

share|improve this question
    
Backports repo -- it is probably a ppa. Why don't You add with add-apt-repository? –  Adobe Jul 21 '13 at 19:49
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