mdfind is a built-in with macOS. It's similar to find (should be on your *nix system if you have one) which can be installed with Cygwin on Windows. On Windows,

mdfind is a built-in with macOS. It's similar to find (should be on your *nix system if you have one) which can be installed with Cygwin on Windows. On Windows, you'd use Powershell and Get-ChildItem (I don't think it's case sensitive, but I don't use PS much).