Thursday, 12 April 2012

Add Missing apt-get Public Keys on Ubuntu 11.10

After updating you list of software sources within update manager, you may receive the following message:'The action would require the installation of packages from non-authenticated sources'

To resolve, perform the following:

1. Open a terminal and run: sudo apt-get update
2. Then take note of all the numbers (keys) after ‘NO_PUBKEY’ W: GPG error: oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY XXXXXXXXXXXXXXXX

3. Run the following for each missing public key: sudo apt-key adv --recv-key --keyserver XXXXXXXXXXXXXXXX
4. Finally, run the following: sudo apt-get update

After this, you should be able to install the update through update manager without any problems


Administrator said...

To open terminal on ubuntu, press: ctrl+alt+t

To copy anything from terminal - first select the content using mouse,then Press ctrl+shift+c to copy.

To paste anything on terminal, press - ctrl+shift+v

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