/usr/ is in libkf5su-dev 5.18.0-0ubuntu1.
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..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5Su/
/usr/lib/x86_64-linux-gnu/cmake/KF5Su/KF5SuTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Su/KF5SuConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Su/KF5SuTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Su/KF5SuConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KDESu.pri
/usr/include/
/usr/include/KF5/
/usr/include/KF5/kdesu_version.h
/usr/include/KF5/KDESu/
/usr/include/KF5/KDESu/KDESu/
/usr/include/KF5/KDESu/KDESu/SuProcess
/usr/include/KF5/KDESu/KDESu/Client
/usr/include/KF5/KDESu/KDESu/StubProcess
/usr/include/KF5/KDESu/KDESu/SshProcess
/usr/include/KF5/KDESu/KDESu/PtyProcess
/usr/include/KF5/KDESu/kdesu/
/usr/include/KF5/KDESu/kdesu/su.h
/usr/include/KF5/KDESu/kdesu/sshprocess.h
/usr/include/KF5/KDESu/kdesu/ssh.h
/usr/include/KF5/KDESu/kdesu/defaults.h
/usr/include/KF5/KDESu/kdesu/client.h
/usr/include/KF5/KDESu/kdesu/process.h
/usr/include/KF5/KDESu/kdesu/kdesu_export.h
/usr/include/KF5/KDESu/kdesu/stub.h
/usr/include/KF5/KDESu/kdesu/stubprocess.h
/usr/include/KF5/KDESu/kdesu/ptyprocess.h
/usr/include/KF5/KDESu/kdesu/suprocess.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libkf5su-dev/
/usr/share/doc/libkf5su-dev/copyright
/usr/lib/x86_64-linux-gnu/libKF5Su.so
/usr/share/doc/libkf5su-dev/changelog.Debian.gz