Выполненный .sh (никакой сервис) файл на запуске

The simplest way to run a command once at startup is to put it in /etc/rc.d/rc.local, which is a link from /etc/rcX.d/S99local, and gets run at the very end of the boot sequence.

It's better to write, debug and link a proper service startup script, but if you're pushed for time and just want to whack in a one-line launch command, I find that's the best place to run it from.