Directories

TODO: system and user directories.

Things like:

~/.config
~/.ssh
/etc/apt

User

MIME types

~/.local/share/mime/

Applications (desktop files)

~/.local/share/applications

Associations

~/.config/mimeapps.list
See also [KDE associations]
See also https://askubuntu.com/a/1163724/228189

Icons for applications

~/.local/share/icons

Executables

~/.local/bin/