/usr/share/acl2-7.1/books/std/util/ is in acl2-books 7.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-7.1/books/std/util/bstar.o
/usr/share/acl2-7.1/books/std/util/da-base.o
/usr/share/acl2-7.1/books/std/util/defaggregate.o
/usr/share/acl2-7.1/books/std/util/defaggrify-defrec.o
/usr/share/acl2-7.1/books/std/util/defalist-base.o
/usr/share/acl2-7.1/books/std/util/defalist.o
/usr/share/acl2-7.1/books/std/util/defconsts.o
/usr/share/acl2-7.1/books/std/util/defenum.o
/usr/share/acl2-7.1/books/std/util/define.o
/usr/share/acl2-7.1/books/std/util/defines.o
/usr/share/acl2-7.1/books/std/util/deflist-aux.o
/usr/share/acl2-7.1/books/std/util/deflist-base.o
/usr/share/acl2-7.1/books/std/util/deflist.o
/usr/share/acl2-7.1/books/std/util/defmapappend.o
/usr/share/acl2-7.1/books/std/util/defmvtypes.o
/usr/share/acl2-7.1/books/std/util/defprojection.o
/usr/share/acl2-7.1/books/std/util/defredundant.o
/usr/share/acl2-7.1/books/std/util/defrule.o
/usr/share/acl2-7.1/books/std/util/defsum.o
/usr/share/acl2-7.1/books/std/util/defval.o
/usr/share/acl2-7.1/books/std/util/extensions/
/usr/share/acl2-7.1/books/std/util/extensions/assert-return-thms.o
/usr/share/acl2-7.1/books/std/util/formals.o
/usr/share/acl2-7.1/books/std/util/generate-symbol.o
/usr/share/acl2-7.1/books/std/util/look-up.o
/usr/share/acl2-7.1/books/std/util/maybe-defthm.o
/usr/share/acl2-7.1/books/std/util/returnspecs.o
/usr/share/acl2-7.1/books/std/util/support.o
/usr/share/acl2-7.1/books/std/util/tests/
/usr/share/acl2-7.1/books/std/util/tests/bstar.o
/usr/share/acl2-7.1/books/std/util/tests/defaggregate.o
/usr/share/acl2-7.1/books/std/util/tests/defaggrify-defrec.o
/usr/share/acl2-7.1/books/std/util/tests/defalist.o
/usr/share/acl2-7.1/books/std/util/tests/define.o
/usr/share/acl2-7.1/books/std/util/tests/defines.o
/usr/share/acl2-7.1/books/std/util/tests/deflist.o
/usr/share/acl2-7.1/books/std/util/tests/defmapappend.o
/usr/share/acl2-7.1/books/std/util/tests/defprojection.o
/usr/share/acl2-7.1/books/std/util/tests/defredundant.o
/usr/share/acl2-7.1/books/std/util/tests/defval.o
/usr/share/acl2-7.1/books/std/util/tests/top.o
/usr/share/acl2-7.1/books/std/util/top.o
/usr/share/acl2-7.1/books/std/util/wizard.o