/usr/lib/ is in ilisp 5.12.0+cvs.2004.12.26-21.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ilisp/find-src.lisp
/usr/lib/emacsen-common/
/usr/lib/emacsen-common/packages/
/usr/lib/emacsen-common/packages/compat/
/usr/lib/emacsen-common/packages/compat/ilisp
/usr/lib/emacsen-common/packages/remove/
/usr/lib/emacsen-common/packages/remove/ilisp
/usr/lib/emacsen-common/packages/install/
/usr/lib/emacsen-common/packages/install/ilisp
/usr/lib/ilisp/
/usr/lib/ilisp/mzscheme-ilisp.scm
/usr/lib/ilisp/lucid.lisp
/usr/lib/ilisp/lispworks.lisp
/usr/lib/ilisp/openmcl.lisp
/usr/lib/ilisp/sbcl.lisp
/usr/lib/ilisp/allegro.lisp
/usr/lib/ilisp/cmulisp.lisp
/usr/lib/ilisp/guile-ilisp.scm
/usr/lib/ilisp/cormanlisp.lisp
/usr/lib/ilisp/cl-chs-init.lisp
/usr/lib/ilisp/cl-ilisp.lisp
/usr/lib/ilisp/ilisp-pkg.lisp