Comment swift (Score 1) 271
If there were one single language to distinguish yourself it might be Swift. it's currenlty apple specific so this will limit your platforms and it's not a sysadmin language. it's an application language. But like perl it is suited for rapid development for small niches like the other languages you know. So you could sell it on a first to market sort of basis that might be consistent with your other skills. The advantage is it's new and thus a level playing field for the short dinosaur arms of an over-the-hill 40 something.