Note: Stable release is for 20.04, for newer system releases, howdy installation might fail.
Slimbook Face is an application that allows you to graphically manage multiple faces with boltgolt/howdy and enable PAM authentication throughout the system, or disable it at login, since login fails in some distributions or desktop environments (like KDE).
To install this application, open a Terminal window (Ctrl+Alt+T) and add the Slimbook repo to your system with the following commands:
sudo add-apt-repository ppa:slimbook/slimbook
sudo apt install slimbookface
Here you have link to the app tutorial!
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This software is protected with the GPLv3 license, which allows you to modify it with the same license and authorship.
Thank you.