Linux: config.ini location

[besendorf]

The Readme and wiki (https://github.com/UltraStar-Deluxe/USDX/wiki/config.ini) do not mention the location of the config.ini on linux when the game is not installed via flatpak or Appimage but with a package or self compiled. What is the location?

[s09bQ5]

If you install the game, on first start the default config will be written to ~/.ultrastardx/.
If you run it from the build tree, it uses the config in the same directory as the executable.