/usr/ is in elpa-dired-du 0.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/emacsen-common/
/usr/lib/emacsen-common/packages/
/usr/lib/emacsen-common/packages/compat/
/usr/lib/emacsen-common/packages/compat/elpa-dired-du
/usr/lib/emacsen-common/packages/install/
/usr/lib/emacsen-common/packages/install/elpa-dired-du
/usr/lib/emacsen-common/packages/remove/
/usr/lib/emacsen-common/packages/remove/elpa-dired-du
/usr/share/
/usr/share/doc/
/usr/share/doc/elpa-dired-du/
/usr/share/doc/elpa-dired-du/README.md
/usr/share/doc/elpa-dired-du/changelog.Debian.gz
/usr/share/doc/elpa-dired-du/copyright
/usr/share/emacs/
/usr/share/emacs/site-lisp/
/usr/share/emacs/site-lisp/elpa-src/
/usr/share/emacs/site-lisp/elpa-src/dired-du-0.5/
/usr/share/emacs/site-lisp/elpa-src/dired-du-0.5/dired-du-autoloads.el
/usr/share/emacs/site-lisp/elpa-src/dired-du-0.5/dired-du-pkg.el
/usr/share/emacs/site-lisp/elpa-src/dired-du-0.5/dired-du.el