I read a wonderful comment in another thread the other day. It was about the obsession of devs to collect a whole range of technologies on their resume. It went something like: "When I hire a carpenter I won't hire him for what he has in his toolbox. I want to know what he can do with only a hammer and chisel (= Linux machine). The rest he can learn."

I will try to look up the link and obviously 'he' can be 'she' as well.