Installing .NET Core (quick hit)

I am working on a series of articles and need to install .NET Core 3.0 on various Linux platforms.  This is just a quick article so that I can find these links later:

1. Centos, Redhat, Fedora, Debian, Ubuntu, SUSE, or OpenSUSE:
   https://docs.microsoft.com/en-us/dotnet/core/install/linux-package-manager-centos7
2. Raspbian:
   https://edi.wang/post/2019/9/29/setup-net-core-30-runtime-and-sdk-on-raspberry-pi-4
3. And finally, I need to get Mono installed in the same as well as Windows:
   https://www.mono-project.com/download/stable/