DEbian
Font MAnager a.k.a. dfontmgr (available through the Synaptic Package
Manager) is helpful when you want to register and unregister fonts on a
Debian / Ubuntu system.
After installation you can start the manager, which is a GUI for the
Defoma package, from the command line. Type sudo dfontmgr (you need to
be root to make changes to fonts). It does not look very pretty but
installing and uninstalling fonts should now be easy.