/usr/ is in libgusb-dev 0.2.9-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/gusb.vapi
/usr/share/doc/
/usr/share/doc/libgusb-dev/
/usr/share/doc/libgusb-dev/TODO
/usr/share/doc/libgusb-dev/copyright
/usr/share/doc/libgusb-dev/README
/usr/share/gir-1.0/
/usr/share/gir-1.0/GUsb-1.0.gir
/usr/include/
/usr/include/gusb-1/
/usr/include/gusb-1/gusb-private.h
/usr/include/gusb-1/gusb.h
/usr/include/gusb-1/gusb/
/usr/include/gusb-1/gusb/gusb-version.h
/usr/include/gusb-1/gusb/gusb-interface.h
/usr/include/gusb-1/gusb/gusb-context-private.h
/usr/include/gusb-1/gusb/gusb-source.h
/usr/include/gusb-1/gusb/gusb-device.h
/usr/include/gusb-1/gusb/gusb-device-list.h
/usr/include/gusb-1/gusb/gusb-device-private.h
/usr/include/gusb-1/gusb/gusb-interface-private.h
/usr/include/gusb-1/gusb/gusb-util.h
/usr/include/gusb-1/gusb/gusb-context.h
/usr/include/gusb-1/gusb/gusb-autocleanups.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gusb.pc
/usr/lib/x86_64-linux-gnu/libgusb.a
/usr/share/doc/libgusb-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libgusb.so