Find what account a service is using and change it if needed

Hi,

I have a service that doesn't appear to have access to a file and I want to verify what account it's using as well as change it if necessary.

In Windows this is quite simple and I assume in Linux it is as well and am hoping someone might point me in the right direction.

Linux version 3.10.0-957.10.1.el7.x86_64

Red Hat 4.8.5-36

Thanks!