How to use send_command from home assistant ?

[francisp2]

I tried all kind of variations,
command: "c:\windows\System32\shutdown.exe"
command: c:\windows\System32\shutdown.exe
command: 'c:\windows\System32\shutdown.exe'
command: "%windir%\System32\shutdown.exe"
command: %windir%\System32\shutdown.exe
command: '%windir%\System32\shutdown.exe'
command: "c\windows\System32\shutdown.exe"
command: c\windows\System32\shutdown.exe
command: 'c:\windows\System32\shutdown.exe'
command: "%windir%\System32\shutdown.exe"
command: %windir%\System32\shutdown.exe
command: '%windir%\System32\shutdown.exe'
command: shutdown

Nothing works

[francisp2]

Stupid me

[Iceman248]

I don't even have the "Send Command" as a service available through HA. I use Linux. Does that only work on Windows?