/usr/share/octave/packages/control-2.6.2/@iddata/ is in octave-control 2.6.2-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/control-2.6.2/@iddata/__property_names__.m
/usr/share/octave/packages/control-2.6.2/@iddata/cat.m
/usr/share/octave/packages/control-2.6.2/@iddata/detrend.m
/usr/share/octave/packages/control-2.6.2/@iddata/diff.m
/usr/share/octave/packages/control-2.6.2/@iddata/display.m
/usr/share/octave/packages/control-2.6.2/@iddata/end.m
/usr/share/octave/packages/control-2.6.2/@iddata/fft.m
/usr/share/octave/packages/control-2.6.2/@iddata/filter.m
/usr/share/octave/packages/control-2.6.2/@iddata/get.m
/usr/share/octave/packages/control-2.6.2/@iddata/horzcat.m
/usr/share/octave/packages/control-2.6.2/@iddata/iddata.m
/usr/share/octave/packages/control-2.6.2/@iddata/ifft.m
/usr/share/octave/packages/control-2.6.2/@iddata/merge.m
/usr/share/octave/packages/control-2.6.2/@iddata/nkshift.m
/usr/share/octave/packages/control-2.6.2/@iddata/plot.m
/usr/share/octave/packages/control-2.6.2/@iddata/resample.m
/usr/share/octave/packages/control-2.6.2/@iddata/set.m
/usr/share/octave/packages/control-2.6.2/@iddata/size.m
/usr/share/octave/packages/control-2.6.2/@iddata/subsasgn.m
/usr/share/octave/packages/control-2.6.2/@iddata/subsref.m
/usr/share/octave/packages/control-2.6.2/@iddata/vertcat.m