I don't know of any executable configuration files on any Unix derivatives. There are init scripts, but they are not configuration; they are instructions.
There are scripts with metadata attached (rc.d items) which may be ambiguous but that is no different from a shared library containing an export table or a set of runtime linker dependencies.
There are scripts with metadata attached (rc.d items) which may be ambiguous but that is no different from a shared library containing an export table or a set of runtime linker dependencies.