Companies have been making exoskeletons ever since the "Hardiman" of the 1960s. While more modern versions have actually bordered on the practical (see the suit worn by Ripley in the movie Aliens... that is a real machine), they have always had to drag a power tether in order to do anything useful. Of course they did not show that part in the movie.
What do you mean by a 'real machine'? I am skeptical that the prop was a powered exoskeleton, even with an external power source. Or do you mean parts of it were powered? Would be cool if it was real though!
You can't teach stupid people not to be stupid. They can't learn in the first place, that's why they're stupid!
Can I get that printed on a t-shirt?
Between infinite and short there is a big difference. -- G.H. Gonnet