/usr/ is in dpkg-dev-el 35.12ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/dpkg-dev-el/
/usr/share/
/usr/share/doc/
/usr/share/doc/dpkg-dev-el/README.Debian
/usr/share/doc/dpkg-dev-el/copyright
/usr/share/emacs/
/usr/share/emacs/site-lisp/
/usr/share/emacs/site-lisp/dpkg-dev-el/
/usr/share/emacs/site-lisp/dpkg-dev-el/debian-copyright.el
/usr/share/emacs/site-lisp/dpkg-dev-el/debian-control-mode.el
/usr/share/emacs/site-lisp/dpkg-dev-el/dpkg-dev-el.el
/usr/share/emacs/site-lisp/dpkg-dev-el/debian-bts-control.el
/usr/share/emacs/site-lisp/dpkg-dev-el/dpkg-dev-el-loaddefs.el
/usr/share/emacs/site-lisp/dpkg-dev-el/readme-debian.el
/usr/share/emacs/site-lisp/dpkg-dev-el/debian-changelog-mode.el
/usr/lib/
/usr/lib/emacsen-common/
/usr/lib/emacsen-common/packages/
/usr/lib/emacsen-common/packages/remove/
/usr/lib/emacsen-common/packages/remove/dpkg-dev-el
/usr/lib/emacsen-common/packages/install/
/usr/lib/emacsen-common/packages/install/dpkg-dev-el
/usr/lib/emacsen-common/packages/compat/
/usr/lib/emacsen-common/packages/compat/dpkg-dev-el
/usr/share/doc/dpkg-dev-el/changelog.gz