Save image and shutdown/close

Is there or does anyone plan to create a script that could save image and close blender perhaps even the pc after an overnight render? it might make long renders “greener” ie save electric!

It’s easy: make a bat file with commands to drive Blender to render and to shut down your computer!
HERE
and
HERE
Bye

interesting so from the os command line is the way to go?
Right so I managed to shut down windows with it but operating blender from there looks trickier. so just run # blender -b file.blend -o //file -F JPEG -x 1 -f 1 then tag on shutdown -s on the end and blender will run save image and windows shuts down after?