/usr/ is in libsbml5-octave 5.16.0+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/octave/
/usr/lib/x86_64-linux-gnu/octave/site/
/usr/lib/x86_64-linux-gnu/octave/site/oct/
/usr/lib/x86_64-linux-gnu/octave/site/oct/x86_64-pc-linux-gnu/
/usr/lib/x86_64-linux-gnu/octave/site/oct/x86_64-pc-linux-gnu/libsbml5/
/usr/lib/x86_64-linux-gnu/octave/site/oct/x86_64-pc-linux-gnu/libsbml5/OutputSBML.mex
/usr/lib/x86_64-linux-gnu/octave/site/oct/x86_64-pc-linux-gnu/libsbml5/TranslateSBML.mex
/usr/share/
/usr/share/doc/
/usr/share/doc/libsbml5-octave/
/usr/share/doc/libsbml5-octave/copyright
/usr/share/octave/
/usr/share/octave/site/
/usr/share/octave/site/m/
/usr/share/octave/site/m/libsbml5/
/usr/share/octave/site/m/libsbml5/CheckAndConvert.m
/usr/share/octave/site/m/libsbml5/Contents.m
/usr/share/octave/site/m/libsbml5/ConvertFormulaToMathML.m
/usr/share/octave/site/m/libsbml5/OutputSBML.m
/usr/share/octave/site/m/libsbml5/TranslateSBML.m
/usr/share/octave/site/m/libsbml5/addLevelVersion.m
/usr/share/octave/site/m/libsbml5/applyUserValidation.m
/usr/share/octave/site/m/libsbml5/getDefaultValues.m
/usr/share/octave/site/m/libsbml5/getStructureFieldnames.m
/usr/share/octave/site/m/libsbml5/getValueType.m
/usr/share/octave/site/m/libsbml5/installSBML.m
/usr/share/octave/site/m/libsbml5/isEnabled.m
/usr/share/octave/site/m/libsbml5/isFbcEnabled.m
/usr/share/octave/site/m/libsbml5/isSBML_Model.m
/usr/share/octave/site/m/libsbml5/isoctave.m
/usr/share/doc/libsbml5-octave/changelog.Debian.gz