/usr/share/doc/cl-asdf/examples/logical-file.lisp is in cl-asdf 2:3.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | (defpackage :test-package (:use :cl))
(in-package :test-package)
(defvar *logical-file* t)
|