/usr/share/octave/ is in octave-tsa 4.2.7-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/
/usr/share/octave/packages/tsa-4.2.7/
/usr/share/octave/packages/tsa-4.2.7/aar.m
/usr/share/octave/packages/tsa-4.2.7/aarmam.m
/usr/share/octave/packages/tsa-4.2.7/ac2poly.m
/usr/share/octave/packages/tsa-4.2.7/ac2rc.m
/usr/share/octave/packages/tsa-4.2.7/acorf.m
/usr/share/octave/packages/tsa-4.2.7/acovf.m
/usr/share/octave/packages/tsa-4.2.7/adim.m
/usr/share/octave/packages/tsa-4.2.7/amarma.m
/usr/share/octave/packages/tsa-4.2.7/ar2poly.m
/usr/share/octave/packages/tsa-4.2.7/ar2rc.m
/usr/share/octave/packages/tsa-4.2.7/ar_spa.m
/usr/share/octave/packages/tsa-4.2.7/arcext.m
/usr/share/octave/packages/tsa-4.2.7/arfit2.m
/usr/share/octave/packages/tsa-4.2.7/biacovf.m
/usr/share/octave/packages/tsa-4.2.7/bisdemo.m
/usr/share/octave/packages/tsa-4.2.7/bispec.m
/usr/share/octave/packages/tsa-4.2.7/content.m
/usr/share/octave/packages/tsa-4.2.7/contents.m
/usr/share/octave/packages/tsa-4.2.7/covm.m
/usr/share/octave/packages/tsa-4.2.7/detrend.m
/usr/share/octave/packages/tsa-4.2.7/doc-cache
/usr/share/octave/packages/tsa-4.2.7/durlev.m
/usr/share/octave/packages/tsa-4.2.7/eeg8s.mat
/usr/share/octave/packages/tsa-4.2.7/flag_implicit_samplerate.m
/usr/share/octave/packages/tsa-4.2.7/flag_implicit_skip_nan.m
/usr/share/octave/packages/tsa-4.2.7/flix.m
/usr/share/octave/packages/tsa-4.2.7/histo.m
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/usr/share/octave/packages/tsa-4.2.7/histo4.m
/usr/share/octave/packages/tsa-4.2.7/hup.m
/usr/share/octave/packages/tsa-4.2.7/invest0.m
/usr/share/octave/packages/tsa-4.2.7/invest1.m
/usr/share/octave/packages/tsa-4.2.7/invfdemo.m
/usr/share/octave/packages/tsa-4.2.7/lattice.m
/usr/share/octave/packages/tsa-4.2.7/lpc.m
/usr/share/octave/packages/tsa-4.2.7/mvaar.m
/usr/share/octave/packages/tsa-4.2.7/mvar.m
/usr/share/octave/packages/tsa-4.2.7/mvfilter.m
/usr/share/octave/packages/tsa-4.2.7/mvfreqz.m
/usr/share/octave/packages/tsa-4.2.7/pacf.m
/usr/share/octave/packages/tsa-4.2.7/packinfo/
/usr/share/octave/packages/tsa-4.2.7/packinfo/DESCRIPTION
/usr/share/octave/packages/tsa-4.2.7/packinfo/INDEX
/usr/share/octave/packages/tsa-4.2.7/parcor.m
/usr/share/octave/packages/tsa-4.2.7/poly2ac.m
/usr/share/octave/packages/tsa-4.2.7/poly2ar.m
/usr/share/octave/packages/tsa-4.2.7/poly2rc.m
/usr/share/octave/packages/tsa-4.2.7/rc2ac.m
/usr/share/octave/packages/tsa-4.2.7/rc2ar.m
/usr/share/octave/packages/tsa-4.2.7/rc2poly.m
/usr/share/octave/packages/tsa-4.2.7/rmle.m
/usr/share/octave/packages/tsa-4.2.7/sbispec.m
/usr/share/octave/packages/tsa-4.2.7/selmo.m
/usr/share/octave/packages/tsa-4.2.7/selmo2.m
/usr/share/octave/packages/tsa-4.2.7/sinvest1.m
/usr/share/octave/packages/tsa-4.2.7/sumskipnan.m
/usr/share/octave/packages/tsa-4.2.7/tsademo.m
/usr/share/octave/packages/tsa-4.2.7/ucp.m
/usr/share/octave/packages/tsa-4.2.7/y2res.m