/usr/share/octave/site/m/vlfeat/toolbox/demo/ is in octave-vlfeat 0.9.17+dfsg0-6+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_aib.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_alldist.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_cmd.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_covdet.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_gmm_2d_rand.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_gmm_2d_twist.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_gmm_3d.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_gmm_convergence.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_hog.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_imdisttf.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kdtree.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kdtree_ann.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kdtree_forest.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kdtree_plot.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kdtree_self.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kmeans_2d.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kmeans_ann_speed.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kmeans_init.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_kmeans_vs_builtin.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_mser_basic.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_mser_cmd.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_mser_delta.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_plots_rank.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_print.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_quickshift.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_slic.m
/usr/share/octave/site/m/vlfeat/toolbox/demo/vl_demo_svm.m