This may be a little early to ask this, but I\'m running Windows 10 Technical Preview Build 10122. I\'d like to set up Cortana to have custom commands. Here\'s how she works:
What you can do is write a .bat file and add a shortcut to the file to the Folder: C:\ProgramData\Microsoft\Windows\Start Menu\Programs you can name the shortcut whatever you want and trigger the shutdown by saying: "Hey Cortana open/start [shortcut name]". Make sure that Cortana only listens to you to not get "pranked".