/usr/ is in libkubuntu-dev 15.04ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/Kubuntu/
/usr/lib/x86_64-linux-gnu/cmake/Kubuntu/KubuntuConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/Kubuntu/KubuntuTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/Kubuntu/KubuntuTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/Kubuntu/KubuntuConfig.cmake
/usr/share/
/usr/share/doc/
/usr/share/doc/libkubuntu-dev/
/usr/share/doc/libkubuntu-dev/copyright
/usr/include/
/usr/include/Kubuntu/
/usr/include/Kubuntu/l10n_language.h
/usr/include/Kubuntu/l10n_languagecollection.h
/usr/include/Kubuntu/busyoverlay.h
/usr/include/Kubuntu/l10n_locale.h
/usr/include/Kubuntu/export.h
/usr/lib/x86_64-linux-gnu/libKubuntu.so
/usr/share/doc/libkubuntu-dev/changelog.gz