/usr/share/openscenegraph/examples/osgtext/ is in openscenegraph-examples 3.2.3+dfsg1-2ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/share/openscenegraph/examples/osgtext/osgtext.cpp
/usr/share/openscenegraph/examples/osgtext3D/TextNode.cpp
/usr/share/openscenegraph/examples/osgtext3D/TextNode.h
/usr/share/openscenegraph/examples/osgtext3D/osgtext3D.cpp
/usr/share/openscenegraph/examples/osgtext3D/osgtext3D_orig.cpp
/usr/share/openscenegraph/examples/osgtext3D/osgtext3D_test.cpp
/usr/share/openscenegraph/examples/osgtexture1D/osgtexture1D.cpp
/usr/share/openscenegraph/examples/osgtexture2D/osgtexture2D.cpp
/usr/share/openscenegraph/examples/osgtexture3D/osgtexture3D.cpp
/usr/share/openscenegraph/examples/osgtexturecompression/osgtexturecompression.cpp
/usr/share/openscenegraph/examples/osgtexturerectangle/osgtexturerectangle.cpp