I see so much overlap between these commands and what's available on Unix systems in general, such as macOS, it'd be nice to see which ones are available cross-

I see so much overlap between these commands and what's available on Unix systems in general, such as macOS, it'd be nice to see which ones are available cross-platform, and which are Linux specific. Also, it would be a bit more useful if this article actually explained how these would be useful for penetration testing.