How to switch off the Local Display using a linux command

[Macdelf]

Hello Everyone,
I set up a Moode installation with an USBBridge Sig and a Katana DAC powered with a Shanti PS: the total boot time is around 40-50 seconds before my 5.5" Waveshare AMOLED displays something. So I would like to let my electronic setup always on while I would switch off the display and all other running operations (e.g. the play of a song) with a GPIO Switch  (this way, it will be much quicker to use).

So my question is: is it possible to do that using some batch or python commands (i.e. display switch on/off) ?

Thank you in advance,
Best regards,

This worked when I used my 7 inch display. I had this in my .lircrc file to turn the display off when not using.

sudo DISPLAY=:0.0 xset dpms force on

sudo DISPLAY=:0.0 xset dpms force off