The computer does not know whats outside, its doesn't see your model. It doesnt understand the purpose of your use, thats why its a modeling tool. A inside out model is perfectly valid because it might model the insides of something as much as outsides.
Theres no command for this.The normal way is to turn back face culling on conform and then swap the normals if its inside out. Its pretty quick. Usually you can spot this even before you conform anything.
However this can be automated just as long as you can describe whats outside for the computer, the way I see it theres 2 options. You can use a ray casting trick and count the hits and check for glancing hits, once you subtract glancing hits form the count if its off its outside and the normals are correct way. Theres no built in function for this. Or you can select a face you can see form the camera thats supposedly on top and take a ray to camera dot normal, if its positive its facing right way if not its flipped.Now since conform does guarantee all shubshells are all facing same way in logical fashion you just need one check per sub shell.
All this however assumes you haven't got broken geometry like non manifold structures or self intersections it all breaks up into a mess that neither method can solve. I would use the ray casting method since selecting the faces is pretty much more work than doing it visually, also it lacks understanding of the scene.The last method is also problematic in some situations.
I would do this visually, because its the only way to be sure. There is however a 3rd way that sortof works sometimes, it doesnt work very well if you have sharp edges in the model tough. You see if this would be easy to do 99% right it would have been included in the base toolset, hell if you could do it 100% right then it would be dealt with automatically.