As @chiraag said. .config is a hidden folder in your home directory, inside there you should have darktable. There you have library.db with the list of imported images, their editing steps, ratings, metadata, … Then there is data.db with styles, presets and tags. And darktablerc with your settings. There is also a file for keyboard shortcuts and maybe some other stuff.
It’s worthwhile reading once the usermanual, it’s full of information you are looking for:
https://www.darktable.org/usermanual/en/overview_chapter.html#darktable_commandline_parameters
I am just looking for 1 information. And the manual was not useful to me in this case.
Thanks for the tip.
I have a similar issue running darktable 2.4.1 under ubuntu 16.04. My second HDD is not visible in the file selection dialog. I have all access rights to it as I can access it from file manager, terminal. Refering to the above suggestion of pressing the folder butto in the file dialog: which one is it?
Any suggestions?
Drag and drop individual files or folders from the Mac Finder application to the light table in darktable. I too was puzzled by this problem. Hope this helps you.