/usr/ is in libxfce4util-dev 4.12.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/xfce4/
/usr/include/xfce4/libxfce4util/
/usr/include/xfce4/libxfce4util/libxfce4util-config.h
/usr/include/xfce4/libxfce4util/libxfce4util.h
/usr/include/xfce4/libxfce4util/xfce-debug.h
/usr/include/xfce4/libxfce4util/xfce-fileutils.h
/usr/include/xfce4/libxfce4util/xfce-generics.h
/usr/include/xfce4/libxfce4util/xfce-i18n.h
/usr/include/xfce4/libxfce4util/xfce-kiosk.h
/usr/include/xfce4/libxfce4util/xfce-license.h
/usr/include/xfce4/libxfce4util/xfce-miscutils.h
/usr/include/xfce4/libxfce4util/xfce-posix-signal-handler.h
/usr/include/xfce4/libxfce4util/xfce-rc.h
/usr/include/xfce4/libxfce4util/xfce-resource.h
/usr/include/xfce4/libxfce4util/xfce-utf8.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libxfce4util-1.0.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libxfce4util-dev/
/usr/share/doc/libxfce4util-dev/NEWS.gz
/usr/share/doc/libxfce4util-dev/TODO
/usr/share/doc/libxfce4util-dev/copyright
/usr/share/gtk-doc/
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libxfce4util/
/usr/share/gtk-doc/html/libxfce4util/home.png
/usr/share/gtk-doc/html/libxfce4util/index.html
/usr/share/gtk-doc/html/libxfce4util/index.sgml
/usr/share/gtk-doc/html/libxfce4util/left-insensitive.png
/usr/share/gtk-doc/html/libxfce4util/left.png
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-File-Utilities.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Internationalisation.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Miscellaneous-Utilities.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-POSIX-Signal-Handling.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Resource-Config-File-Support.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Resource-lookup-functions.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Software-Licenses.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Unicode-Support-Functions.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Version-Information.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Xfce-Generics.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-Xfce-Kiosk-functions.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-core.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-datatypes.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-fundamentals.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util-utilities.html
/usr/share/gtk-doc/html/libxfce4util/libxfce4util.devhelp2
/usr/share/gtk-doc/html/libxfce4util/reference.html
/usr/share/gtk-doc/html/libxfce4util/right-insensitive.png
/usr/share/gtk-doc/html/libxfce4util/right.png
/usr/share/gtk-doc/html/libxfce4util/style.css
/usr/share/gtk-doc/html/libxfce4util/up-insensitive.png
/usr/share/gtk-doc/html/libxfce4util/up.png
/usr/lib/x86_64-linux-gnu/libxfce4util.so
/usr/share/doc/libxfce4util-dev/changelog.Debian.gz