Can someone explain the context of this? I'm not getting the references. I mean, I know what grep is, and I know the -R option, but ...

Is the joke that grep obviously has nothing to do with searching a server you're not on, and the submitter is pretending to be someone who expected that it would search Amazon for results? If so, that's stupid, and not even a clever joke.

However, from some of the comments, it sounds like real users (ones actually competent enough to be using grep) are expecting this functionality -- perhaps it doesn't work on some Amazon storage site?