Import Missing Launchpad PPA GPG Keys Automatically in Ubuntu

Quite often when you add a PPA when the Ubuntu keyserver is down, the key is doesn’t get added. It can be quite annoying to search for and manually import the GPG keys for various PPAs. When you don’t have the appropriate GPG imported, in most cases you can’t update and when you run apt-get update, you end with errors similar to these:

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://extras.ubuntu.com maverick Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192

or

W: GPG error: http://ppa.launchpad.net maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9BF3BB4E5E17B5

W: You may want to run apt-get update to correct these problems

WebUpd8 has created an Ubuntu .deb package for the script which takes care of these issues. You install this package by adding WebUpd8 PPA by doing the following:

sudo add-apt-repository ppa:nilarimogard/webupd8

sudo apt-get update

sudo apt-get install launchpad-getkeys

Once the installation is over you can import all the missing GPG keys for your PPAs, simply by using the following command:

sudo launchpad-getkeys

This should take care of all our missing GPG keys. No more broken updates!

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