I don't need the key in my server's keyring anymore. Is it possible to remove it? I added the key using this command:
curl http://repo.varnish-cache.org/debian/GPG-key.txt | apt-key add -
Thanks for helping
First you need to find the key id of the key you added. Do this by the command:
sudo apt-key list
It will list all the keys that you have, with each entry looking like this:
pub 1024R/B455BEF0 2010-07-29
uid Launchpad clicompanion-nightlies
Once you have figured out which key to remove, use the command sudo apt-key del <keyid> where <keyid> is replaced with the actual keyid of the key you want to remove from your keyring.
$ sudo apt-key del B455BEF0
$ apt-key list | grep clicompan
$
