tldr/pages/linux/apt-key.md

apt-key

Key management utility for the APT Package Manager on Debian and Ubuntu

• List trusted keys

apt-key list

• Add a key to the trusted keystore

apt-key add {{public_key_file.asc}}

• Delete a key from the trusted keystore

apt-key del {{key_id}}

• Add a remote key to the trusted keystore

wget -qO - {{https://host.tld/filename.key}} | apt-key add -