Brunch-Recommended Way of Setting User-Defined System-Wide Startup Script

[yasurok]

What is the Brunch-recommended way to add a user-defined system-wide startup script? For starters, I would like to have the script in this thread on activating the internal LTE modem run at every boot.

Thank you for your help in advance!

[sebanc]

Have a look here:
https://github.com/sebanc/brunch/blob/r107/brunch-patches/99-bootscripts.sh

I just noticed the comment is incorrect, the correct path for scripts is: /mnt/stateful_partition/brunch/bootscripts

[yasurok]

Thank you!!! I am very happy to report that Brunch executed the script as intended.

[alex868-max]

sorry, I don't speak English, I'm Italian, is it possible to have a written guide or a photo on how to start a script, I'm new to linux, we have the same device and I don't know how to make it work when starting chrome os