I currently have to use Gnome 3 because of this, so I don't have the handy shortcuts like [super] + 2 opening the second application (Firefox) in my launcher available.
What I want to do, is a to create custom shortcuts for these. Which command do I have to execute to in order to started Firefox if it isn't running and switching to the window of Firefox if it already is running?
Firefox – of course – only is an example. But it's the program I care most about. Ideally, it should also work with Evolution and Nautilus / Nemo.