Fast .NET CLI Downloader

There are plenty of GUI download managers, but I wanted a simple one that I can call from the command line. With the newish dotnet run app.cs style, it became easier to do this. Here is the full source code. Make sure the file is executable, and then you can run it with downloader.cs someLargeFile.iso and it will download the file, in parts, to the current directory, then it stitches them…