This github profile has too many projects, and thought they are public, not all of them are equally interesting. They fall in the following categories.
I have a textbook series The Art of HPC. The public repositories are here. You should find this very interesting.
I create repositories for publishing class materials for my UT courses. They are open because why not.
Support for my work at TACC. These repositories are purely as an easy way to sync between different machines. I doubt that many people are interested in this.