How to add an OpenPGP repository key, now that apt-key is deprecated Your email has been sent For years, I’ve added repository keys to Ubuntu-based Linux distributions with the apt-key command ...

To solve the Apt-get : NO_PUBKEY / GPG error in Debian, simply type the following commands, taking care to replace the number below with that of the key that was displayed in the error message: gpg ...

sudo apt-key list. shows the keys contained in the repositories. The old keys, which now replace the two downloaded and imported keys, are deleted by the command. sudo apt-key del "<number>" ...