A few weeks ago I was whining because cdf wouldn’t behave like I knew it could — correction: like I knew it had. Here’s discus, which might be closer to what I was wanting.
That’s what I look for in a “graphical” disk usage monitor. Very nicely done. Clean columns, adjustable significant digits, pick your unit of size, and best of all … color!
Okay, I harp on color sometimes … all the time. 🙄 It’s a small thing I enjoy seeing.
That aside, discus does what I wanted, gives me clean output, handles most every instance without getting confused, and gives me enough customization to make me happy.
There’s not much more to say about a program which just shows disk usage. But there are good ways and bad ways to do that. As you will see later. … 😐
Inconsolation 
although you’re not at the N, you might want ncdu. as it’s nc du it’s ok for D 😉
http://dev.yorhel.nl/ncdu/scr
No, no, that would be cheating. 😉 It’s on my list for the N section. I’ll keep everyone in suspense. …