Linux does not have a registry. … With most tools that come with Linux, configuration files exist in the /etc directory or one of its subdirectories. The curse of a no-registry arrangement is that there is no standard way of writing configuration files. Each application or server can have its own format.

Why Linux has no registry?

There’s no registry, because all the settings are in text files in /etc and in your home directory. You can edit them with any old text editor.

Does Ubuntu have a registry?

gconf is a “registry” for Gnome, which Ubuntu is now moving away from. It does not control every aspect of the system. Much of the lower-level information is in flat text files spread throughout /etc and /usr/share/name-of-app.