Does the Sketch app provide something like a "resize artboard to content" command? If yes, where can I find it?
This question has not been accepted and I think what OP were looking for is resize the artboard to fit to the content with it, and thus it got no answer so far.
While I don't know when this feature had been available, but in Sketch 3.7, you can achieve it exactly. Just select the artboard and on the Inspector, click on the
Resize to Fit. Sketch automatically resize the artboard to fit to the content.