I used this site to help implement some core utils in TypeScript for Deno. They never had all the features, but it helped understand the code paths, etc.

That sounds interesting. Do you have it up on github or somewhere?

Previously:

https://news.ycombinator.com/item?id=26411908

https://news.ycombinator.com/item?id=20328650

https://news.ycombinator.com/item?id=20334259

I frequently "info coreutils". I poke around and almost always learn something new or refresh something that had faded. Sort of a playground for me...

I have learnt a lot from Maizure's blog. One of my early favorites: http://www.maizure.org/projects/printf/index.html

Oh this is awesome. One of the first things I do when I get a new mac is override the ancient BSD tools and install the gnu coreutils.