Tecadmin published a tutorial showing you how to import GPG keys on Ubuntu and Debian (without apt-key)
How to Import GPG Keys on Ubuntu & Debian (without apt-key)
The latest Debian-based systems have deprecated the use of the apt-key command. This command is used to import the GPG signing keys to systems. This command was working fine till Debian 10 and its derivatives. After the release of Debian 11 (and its derivatives like Ubuntu 22.04), the users start getting a warning message on
