You can look at this discussion

https://steamcommunity.com/app/353380/discussions/1/152393186490496699/

I can not understand how that discussion could help me ... Should I create a script? What command? And positioned where?

This sounds like a bad idea but I think you can just change /home/steam/rc.local to add something to startup. It's running a linux OS and their should be a lot of information if you search for startup and rc.local.

If you aren't sure what you're doing then I wouldn't. If you can't get back to the menu to do a factory reset and mess something up, it could be a problem.

or ftp to it and change remove its autostart, then reboot

Originally posted by garbalen:

you can just change /home/steam/rc.local to add something to startup.

That's the problem, I don 't know what command I've to use

Originally posted by Daniz:

Originally posted by garbalen:

you can just change /home/steam/rc.local to add something to startup.

That's the problem, I don 't know what command I've to use

After launch application - see txt file in /tmp
Create script for start your apps.
Example: https://github.com/schmel/steamlink