Amusingly, Emacs can do pretty much all he listed. Of course, as somebody who pretty much lives in Emacs and a browser, I'm probably the wrong demographic :).

Amusingly, Emacs can do pretty much all he listed. Of course, as somebody who pretty much lives in Emacs and a browser, I'm probably the wrong demographic :). Also, I'm annoyed at other commenters' equating "command line" with primitive: just because GUIs are newer does not mean they are superior or that the command line is obsolete! For a large range of tasks like file management or system administration it is actually superior; for quite a lot of other things it's completely usable. I'm not saying GUIs are useless or that the command line is perfect for everything, but it is far from obsolete or inferior. Now, doing everything in a terminal is overkill, which is why this is a challenge--you're not expected to use a terminal forever, just long enough to get sufficiently acquainted with it so that when you do things the terminal is great at--which you will--you will be able to use it as efficiently as possible. And, since all the readers here doubtlessly spend very large amounts of time behind a computer, being as efficient as possible there should be a priority. Coincidentally, I say all this as somebody who started using a computer with Windows 95. I only learned how to use the command line (first a bit on Windows then on Linux) because it looked cool; I continue using it because it turned out to be more efficient at a whole host of tasks than using a GUI.