For all the talk about resume driven development, I am hiring now, and will say that people who have solved their problems by learning more about Linux and such sound way more impressive than those who list out passing familiarity with a bunch of high level services. The first style of resume really stands out. The second is a dime a dozen.

To make an analogy, it's like hiring a carpenter based on the number of tools they have. NO. Show me your skill with a hammer and chisel, and I'll assume you can figure out the rest.