/usr/lib/ is in libvtk6-qt-dev 6.3.0+dfsg1-11build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/cmake/
/usr/lib/cmake/vtk-6.3/
/usr/lib/cmake/vtk-6.3/Modules/
/usr/lib/cmake/vtk-6.3/Modules/vtkGUISupportQt.cmake
/usr/lib/cmake/vtk-6.3/Modules/vtkGUISupportQtOpenGL.cmake
/usr/lib/cmake/vtk-6.3/Modules/vtkGUISupportQtSQL.cmake
/usr/lib/cmake/vtk-6.3/Modules/vtkGUISupportQtWebkit.cmake
/usr/lib/cmake/vtk-6.3/Modules/vtkRenderingQt.cmake
/usr/lib/cmake/vtk-6.3/Modules/vtkRenderingQtHierarchy.txt
/usr/lib/cmake/vtk-6.3/Modules/vtkViewsQt.cmake
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libvtkGUISupportQt-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkGUISupportQtOpenGL-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkGUISupportQtSQL-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkGUISupportQtWebkit-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkRenderingQt-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkRenderingQtPython27D-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkRenderingQtTCL-6.3.so
/usr/lib/x86_64-linux-gnu/libvtkViewsQt-6.3.so