Technology Tales

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TOPIC: KEYRING

ERROR: Can't find the archive-keyring

10th April 2014

When I recently did my usual system update for the stable version Ubuntu GNOME, there were some updates pertaining to apt and the process failed when I executed the following command:

sudo apt-get upgrade

Usefully, some messages were issued and here's a flavour:

Setting up apt (0.9.9.1~ubuntu3.1) ...
ERROR: Can't find the archive-keyring
Is the ubuntu-keyring package installed?
dpkg: error processing apt (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
apt
E: Sub-process /usr/bin/dpkg returned an error code (1)

Web searches indicated the issue was missing files in /usr/share/keyring, which I didn't delete. Since apt was disabled due to the missing keyring files, installing software for fixes was impossible. My solution was to copy the /usr/share/keyring files from an Ubuntu GNOME 14.04 virtual machine to the same location on my Ubuntu GNOME 13.10 host. For others without this setup, I've included these files in a zip file below. While other solutions like Y PPA were mentioned, they required prior installation, making them useless when tools like Synaptic were unavailable. I'd appreciate information on other fixes that don't involve reinstalling the operating system, potential causes for the file loss, and how to prevent it.

Ubuntu Keyrings

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