> `man -K "free space"` isn't very fruitful "free space" doesn't turn it up, but on my system only turns up one result that obviously isn't it, no big loss. "

> `man -K "free space"` isn't very fruitful "free space" doesn't turn it up, but on my system only turns up one result that obviously isn't it, no big loss. "free" also doesn't turn it up, which seems like a missed opportunity. Going through the 40ish results before you're confident it's none of them is needlessly painful, but not crazy. Both "disk" and "space" do turn it up, though, and also surface du (amongst about 50 other things). I don't think scanning through <100 text items is clearly worse than digging through (say) the Windows control panel GUI. ~~~ I'd also note that TUI encompasses two kinds of thing - the utility in the shell (like df) and the captive interface that takes you away from your shell for an extended time as you navigate possible actions in some other manner. The latter has more of the benefits and drawbacks of a GUI. ~~~ In any case, I don't think your thesis is too far off, and I certainly welcome improvements to composability and discoverability across the board.