How to install and use it on KeePassX Whonix

General Tor and Anonymity Talk
1

I try to install and use it on KeePassX Whonix,
if someone has an idea ?

Je suis français !

2

(Password manager fpm2 is installed by default as per “Add Password manager by default” (Whonix Forum) and https://www.whonix.org/wiki/Dev/Password_Manager.)

apt-get update documentation (prerequisite):

generally on installing software:

specifically:

sudo apt-get install keepassx

Also applies: