I noticed, In 16.04, apt-get update downloads more data. Some of the big files include DEP-11 things which I don't know much about.

I have found a Debian Wiki page https://wiki.debian.org/AppStream, which says these files YAML-formatted metadata provided for ---

The metadata can for example be used by software centers like GNOME Software or KDE Discover to display a user-friendly application-centric way on the package archive.

But, I don't use these Software Centers and I don't want to fetch those huge files. How do I disable fetching of these wastes?

2 Answers 2


If you dont need graphical package manager you can uninstall appstream package and all graphical managers that depend on it:

aptitude purge appstream

If you prefer mv solution, then better do it with dpkg-divert and it will stay persistent on package upgrades:

dpkg-divert --local --rename --divert '/etc/apt/apt.conf.d/#50appstream' /etc/apt/apt.conf.d/50appstream
  • 3
    That's probably two answers, but both are better than the accepted answer :-)
    – Auspex
    Jun 3, 2017 at 22:06

Looks like it is defined in /etc/apt/apt.conf.d/50appstream

Can be disabled with:

sudo mv /etc/apt/apt.conf.d/50appstream{,.disabled}

That stopped it on mine, still visible in updates as:

N: Ignoring file '50appstream.disable' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension


If you want, you can just move the file outside of that directory, it will no longer show up. No more notices. eg:sudo mv /etc/apt/apt.conf.d/50appstream /etc/apt/50appstream

  • 1
    Isn't It an error?
    – Anwar
    Sep 13, 2016 at 2:45
  • 2
    Well, the "N:" part means it's just a notice. You get "W:" warnings as well. Actual errors stop it functioning.
    – Grizly
    Sep 13, 2016 at 23:29

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