/usr/share/acl2-6.5/books/fix-cert/test-fix-cert0.acl2 is in acl2-books-source 6.5-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | (in-package "ACL2")
; cert-flags: ? nil :ttags :all
(certify-book "test-fix-cert0" ? nil :ttags :all)
|