Open a file automatically when starting up Raspberry Pi3 b+

Hello everyone,

Could someone share your knowledge how to open a LibreOffice Calc file automatically when starting up Raspberry Pi3 b+? I want a specific calc file open automatically after I connect my Pi to power. Appreciate your help!

Your question is out of the scope of this site. Refer to your OS manual (Pidora or what?) or ask in a relevant forum.

Raspberry Pi3 b+ is a denotation for a specific hardware and hardware doesn’t open files, but operating systems do - and you did not mention which one is installed on your hardware