Current documentation (like a man page) is typically exhaustive, doesn't sort by importance/usage, neglects common compound flag combinations, and is not located in a single doc. For example, for grep I want to know the top X ways to use it and some background about when they should be used - not everything. Further, there are a lot of HN posts about developers' favorite piped commands (I call them command cocktails - where multiple commands are used on the same line with outputs flowing into inputs) that are spread over HN comment threads - and are primarily communicated today by word of mouth to new devs. I've culled the top HN posts and comments on the CLI over the years - plus a few websites to put together this list.

Pull requests highly encouraged.