/usr/share/octave/packages/ is in octave-secs1d 0.0.8-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/3.2/
/usr/share/octave/packages/3.2/secs1d-0.0.8/
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGelectron_driftdiffusion.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGgummelmap.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGhole_driftdiffusion.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGn2phin.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGnlpoisson.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGp2phip.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGphin2n.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGphip2p.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/DDGplotresults.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDG/doc-cache
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDN/
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDN/DDNnewtonmap.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/DDN/doc-cache
/usr/share/octave/packages/3.2/secs1d-0.0.8/PKG_ADD
/usr/share/octave/packages/3.2/secs1d-0.0.8/PKG_DEL
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Ubern.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Ubernoulli.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Ucompconst.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Ucomplap.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Ucompmass.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Udriftdiffusion.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Umediaarmonica.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/Uscharfettergummel.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/constants.m
/usr/share/octave/packages/3.2/secs1d-0.0.8/Utilities/doc-cache
/usr/share/octave/packages/3.2/secs1d-0.0.8/doc-cache
/usr/share/octave/packages/3.2/secs1d-0.0.8/packinfo/
/usr/share/octave/packages/3.2/secs1d-0.0.8/packinfo/.autoload
/usr/share/octave/packages/3.2/secs1d-0.0.8/packinfo/DESCRIPTION
/usr/share/octave/packages/3.2/secs1d-0.0.8/packinfo/INDEX
/usr/share/octave/packages/3.2/secs1d-0.0.8/secs1d.m