apt-get updates started failing with:
W: GPG error: http://www.getautomatix.com edgy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY CC919A31E23C5FC3 W: You may want to run apt-get update to correct these problems
This was easily fixed with:
$ gpg --keyserver subkeys.pgp.net --recv CC919A31E23C5FC3 gpg: requesting key E23C5FC3 from hkp server subkeys.pgp.net gpg: key E23C5FC3: public key "Arnav Ghosh (Automatix Team Lead)
" imported gpg: Total number processed: 1 gpg: imported: 1 $ gpg --export --armor E23C5FC3 | sudo apt-key add - OK
Now, apt knows about the gpg public key for Automatix and doesn’t complain when I do
sudo apt-get update.