Install add-apt-key by entering the following commands in the terminal:
sudo apt update sudo apt install add-apt-key
Description:
Command line tool to add GPG keys to the APT keyring
The command add-apt-key provides a convenient command line interface which will add a new GPG key to your APT keyring. . Those who are more graphically inclined may prefer the package gui-apt-key.
Version: 1.0-0.5
Section: universe/admin