For years I used an IP subnet cheat sheet when I first got into networking. Recently I saw the site I used, which is still the top result on google more than a decade later.
Here is a command cheat sheet for Linux, that I will expand on to include commands I use almost daily. In the hopes, it might grow into something useful to someone.
As Debian is our distribution of choice, some of these might not apply if you make use of different distributions.
My go-to package is mlocate. To install, simply run: