/usr/share/vtk/VisualizationAlgorithms/Tcl/ is in vtk-examples 5.8.0-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/vtk/VisualizationAlgorithms/Tcl/BandContourTerrain.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/ClipCow.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/ColorIsosurface.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/CutCombustor.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/DepthSort.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/ExtractGeometry.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/ExtractUGrid.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/GenerateTextureCoords.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/SubsampleGrid.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/TextureThreshold.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/TransformTextureCoords.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/VisQuad.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/deciFran.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/imageWarp.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/officeTube.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/officeTubes.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/probeComb.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/smoothFran.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/spikeF.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/streamSurface.tcl
/usr/share/vtk/VisualizationAlgorithms/Tcl/warpComb.tcl