/usr/share/acl2-8.0dfsg/books/acl2s/ is in acl2-books-source 8.0dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-8.0dfsg/books/acl2s/base-theory.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/ccg/
/usr/share/acl2-8.0dfsg/books/acl2s/ccg/ccg-settings-dependencies.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/ccg/ccg.acl2
/usr/share/acl2-8.0dfsg/books/acl2s/ccg/ccg.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cert.acl2
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/acl2s-parameter.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/base-cgen-rules.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/basis.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/build-enumcalls.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/callback.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/cert.acl2
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/cgen-rules.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/cgen-search.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/cgen-state.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/fixers-gl-backend.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/fixers-greedy.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/fixers2.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/incremental-search.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/infer-enum-shape.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/propagate.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/prove-cgen.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/select.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/simple-graph-array.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/simple-search.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/top.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/type.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/utilities.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/cgen/with-timeout.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/custom.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/alistof.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/base.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/builtin-combinators.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/cert.acl2
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/defdata-attach.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/defdata-core.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/defdata-util.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/enumerators-gen.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/library-support.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/listof.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/map.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/mv-proof.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/num-list-fns.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/num-list-thms.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/random-state-basis1.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/random-state.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/record.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/register-combinator.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/register-data-constructor.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/register-type.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/rem-and-floor.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/sig.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/splitnat.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/switchnat.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/tau-characterization.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/top.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defdata/var-book.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/defunc.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/
/usr/share/acl2-8.0dfsg/books/acl2s/demos/alloy-support.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/cert.acl2
/usr/share/acl2-8.0dfsg/books/acl2s/demos/dsp-defthms.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/dsp-defuns.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/dsp-fixer-rules.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/dsp-preservation-rules.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/dsp-type-and-fixer-defuns.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/demos/refinement-sfm06-with-hazards.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/doc.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/mode-acl2s-dependencies.lisp
/usr/share/acl2-8.0dfsg/books/acl2s/portcullis.acl2
/usr/share/acl2-8.0dfsg/books/acl2s/portcullis.lisp