Enroll a specific finger for a specific user

Enroll fingerprints into the database.
More information: <https://manned.org/fprintd-enroll>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

fprintd-enroll --finger {{finger_name}} {{username}}

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