The slides for my talk at Scale17x are available here: In Google Slides
The synopsis is here: At the SCALE website
My repository with W-Utils, the “Worst Utils” versions of a few common userland utilities is here: On GitHub . The implementations are all incomplete, proof of concept sorts of things, but they are useful examples that are much simplified compared to the “real thing” in GNU Coreutils.
A video of the talk is up on the SCALE YouTube page. My talk in the “Ballroom C” video starts at 4:05:30. The camera doesn’t cover the screen, so you may need to be clicking along with the slide deck in you want the full experience. (The embedded video starts near the right time, but it doesn’t seem to want to seek to the exact spot, so you may need to move in time a little.)