The article is about 12 years old. Unix is one of those topics on Wikipedia where experts wrote a lot of trivial articles, for every shell builtin and implement

The article is about 12 years old. Unix is one of those topics on Wikipedia where experts wrote a lot of trivial articles, for every shell builtin and implementation details. Gradually, these are challenged for independent notability and merged into larger articles, or deemed to be no more than dictionary definitions. There are some interesting points raised on the Talk page: that this alleged philosophy wasn't really espoused or coined by the implementors, so there's one angle for you.