Store a key in a specific keyring

Manipulate the Linux kernel keyring.
More information: <https://manned.org/keyctl>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

keyctl add {{type_keyring}} {{key_name}} {{key_value}} {{target_keyring}}

click the source code to copy install keyctl on any operating system with command-not-found.com