/usr/share/octave/packages/fpl-1.3.4/deprecated/ is in octave-fpl 1.3.4-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2coloredgradient.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2coloredrubbersheet.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2dxappenddata.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2dxoutputdata.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2dxoutputtimeseries.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2pdequiver.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2pdequiver.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2pdeshowmesh.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2pdeshowmesh.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2pdesurf.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2ptcquiver.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2ptcquiver.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2ptcshowmesh.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2ptcshowmesh.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2ptcsurf.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2ptcsurf.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2showmesh.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2trspdesurf.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2trspdesurf.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2trsptcsurf.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2trsptcsurf.net
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2vtkoutputdata.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL3dxoutputfield.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL3dxoutputmesh.m
/usr/share/octave/packages/fpl-1.3.4/deprecated/doc-cache