/usr/share/octave/ is in octave-strings 1.1.0-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/
/usr/share/octave/packages/strings-1.1.0/
/usr/share/octave/packages/strings-1.1.0/base64decode.m
/usr/share/octave/packages/strings-1.1.0/base64encode.m
/usr/share/octave/packages/strings-1.1.0/cstrcmp.m
/usr/share/octave/packages/strings-1.1.0/doc-cache
/usr/share/octave/packages/strings-1.1.0/editdistance.m
/usr/share/octave/packages/strings-1.1.0/packinfo/
/usr/share/octave/packages/strings-1.1.0/packinfo/.autoload
/usr/share/octave/packages/strings-1.1.0/packinfo/DESCRIPTION
/usr/share/octave/packages/strings-1.1.0/packinfo/INDEX
/usr/share/octave/packages/strings-1.1.0/packinfo/NEWS
/usr/share/octave/packages/strings-1.1.0/strjoin.m
/usr/share/octave/packages/strings-1.1.0/strsort.m