/usr/share/budgie-desktop/keycontrol/custom-keys.d/show-files.dconf is in budgie-desktop-environment 0.9.9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | [custom-keybindings/budgie-show-files-test]
binding='<Super>e'
command='nautilus --new-window %U'
name='Show File Browser'
|