/usr/share/octave/packages/ is in octave-odepkg 0.8.4-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/odepkg-0.8.4/
/usr/share/octave/packages/odepkg-0.8.4/bvp4c.m
/usr/share/octave/packages/odepkg-0.8.4/doc-cache
/usr/share/octave/packages/odepkg-0.8.4/ode23.m
/usr/share/octave/packages/odepkg-0.8.4/ode23d.m
/usr/share/octave/packages/odepkg-0.8.4/ode23s.m
/usr/share/octave/packages/odepkg-0.8.4/ode45.m
/usr/share/octave/packages/odepkg-0.8.4/ode45d.m
/usr/share/octave/packages/odepkg-0.8.4/ode54.m
/usr/share/octave/packages/odepkg-0.8.4/ode54d.m
/usr/share/octave/packages/odepkg-0.8.4/ode78.m
/usr/share/octave/packages/odepkg-0.8.4/ode78d.m
/usr/share/octave/packages/odepkg-0.8.4/odebwe.m
/usr/share/octave/packages/odepkg-0.8.4/odeexamples.m
/usr/share/octave/packages/odepkg-0.8.4/odeget.m
/usr/share/octave/packages/odepkg-0.8.4/odephas2.m
/usr/share/octave/packages/odepkg-0.8.4/odephas3.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_event_handle.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_examples_dae.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_examples_dde.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_examples_ide.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_examples_ode.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_structure_check.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_calcmescd.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_calcscd.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_chemakzo.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_hires.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_implakzo.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_implrober.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_impltrans.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_oregonator.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_pollution.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_robertson.m
/usr/share/octave/packages/odepkg-0.8.4/odepkg_testsuite_transistor.m
/usr/share/octave/packages/odepkg-0.8.4/odeplot.m
/usr/share/octave/packages/odepkg-0.8.4/odeprint.m
/usr/share/octave/packages/odepkg-0.8.4/odeset.m
/usr/share/octave/packages/odepkg-0.8.4/packinfo/
/usr/share/octave/packages/odepkg-0.8.4/packinfo/.autoload
/usr/share/octave/packages/odepkg-0.8.4/packinfo/DESCRIPTION
/usr/share/octave/packages/odepkg-0.8.4/packinfo/INDEX
/usr/share/octave/packages/odepkg-0.8.4/packinfo/NEWS