/usr/share/acl2-6.3/books/make-event/ is in acl2-books 6.3-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-6.3/books/make-event/acl2x-help-test.o
/usr/share/acl2-6.3/books/make-event/acl2x-help.o
/usr/share/acl2-6.3/books/make-event/assert-check-include-1.o
/usr/share/acl2-6.3/books/make-event/assert-check-include.o
/usr/share/acl2-6.3/books/make-event/assert-check.o
/usr/share/acl2-6.3/books/make-event/assert-include.o
/usr/share/acl2-6.3/books/make-event/basic-check.o
/usr/share/acl2-6.3/books/make-event/basic-pkg-check.o
/usr/share/acl2-6.3/books/make-event/basic-pkg.o
/usr/share/acl2-6.3/books/make-event/basic.o
/usr/share/acl2-6.3/books/make-event/defconst-fast-examples.o
/usr/share/acl2-6.3/books/make-event/defconst-fast.o
/usr/share/acl2-6.3/books/make-event/defrefine.o
/usr/share/acl2-6.3/books/make-event/defrule.o
/usr/share/acl2-6.3/books/make-event/defspec.o
/usr/share/acl2-6.3/books/make-event/dotimes.o
/usr/share/acl2-6.3/books/make-event/double-cert-test-1.o
/usr/share/acl2-6.3/books/make-event/double-cert-test.o
/usr/share/acl2-6.3/books/make-event/embeddable-event-forms.o
/usr/share/acl2-6.3/books/make-event/eval-check-tests.o
/usr/share/acl2-6.3/books/make-event/eval-check.o
/usr/share/acl2-6.3/books/make-event/eval-tests.o
/usr/share/acl2-6.3/books/make-event/gen-defthm-check.o
/usr/share/acl2-6.3/books/make-event/gen-defthm.o
/usr/share/acl2-6.3/books/make-event/gen-defun-check.o
/usr/share/acl2-6.3/books/make-event/gen-defun.o
/usr/share/acl2-6.3/books/make-event/inline-book.o
/usr/share/acl2-6.3/books/make-event/local-elided-include.o
/usr/share/acl2-6.3/books/make-event/local-elided.o
/usr/share/acl2-6.3/books/make-event/local-requires-skip-check-include.o
/usr/share/acl2-6.3/books/make-event/local-requires-skip-check.o
/usr/share/acl2-6.3/books/make-event/logical-tangent.o
/usr/share/acl2-6.3/books/make-event/macros-include.o
/usr/share/acl2-6.3/books/make-event/macros-skip-proofs-include.o
/usr/share/acl2-6.3/books/make-event/macros-skip-proofs.o
/usr/share/acl2-6.3/books/make-event/macros.o
/usr/share/acl2-6.3/books/make-event/make-event-keywords-or-exp-check.o
/usr/share/acl2-6.3/books/make-event/make-event-keywords-or-exp.o
/usr/share/acl2-6.3/books/make-event/make-redundant.o
/usr/share/acl2-6.3/books/make-event/nested-check.o
/usr/share/acl2-6.3/books/make-event/nested.o
/usr/share/acl2-6.3/books/make-event/portcullis-expansion-include.o
/usr/share/acl2-6.3/books/make-event/portcullis-expansion.o
/usr/share/acl2-6.3/books/make-event/proof-by-arith.o
/usr/share/acl2-6.3/books/make-event/read-from-file.o
/usr/share/acl2-6.3/books/make-event/require-book.o
/usr/share/acl2-6.3/books/make-event/stobj-test.o
/usr/share/acl2-6.3/books/make-event/test-case-check.o
/usr/share/acl2-6.3/books/make-event/test-case.o