Coming into the party late, but I don't think it was as bad as everyone is making it out to be.
1) the user is obviously new, and probably didn't know you could embed images into the question so they can be viewed without clicking
2) the image itself was extremely critical to the answer as the asker stated he tried a valid command, which in any normal shell would have worked.
In fact, the only thing I can fault him for is not stating in the original question what he tried. That is an issue yes, but it's the only legitimate one that I would fault him for.