/usr/share/octave/packages/communications-1.2.0/@galois/ is in octave-communications-common 1.2.0-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/communications-1.2.0/@galois/conv.m
/usr/share/octave/packages/communications-1.2.0/@galois/convmtx.m
/usr/share/octave/packages/communications-1.2.0/@galois/deconv.m
/usr/share/octave/packages/communications-1.2.0/@galois/det.m
/usr/share/octave/packages/communications-1.2.0/@galois/dftmtx.m
/usr/share/octave/packages/communications-1.2.0/@galois/diag.m
/usr/share/octave/packages/communications-1.2.0/@galois/exp.m
/usr/share/octave/packages/communications-1.2.0/@galois/fft.m
/usr/share/octave/packages/communications-1.2.0/@galois/filter.m
/usr/share/octave/packages/communications-1.2.0/@galois/ifft.m
/usr/share/octave/packages/communications-1.2.0/@galois/inv.m
/usr/share/octave/packages/communications-1.2.0/@galois/inverse.m
/usr/share/octave/packages/communications-1.2.0/@galois/isequal.m
/usr/share/octave/packages/communications-1.2.0/@galois/log.m
/usr/share/octave/packages/communications-1.2.0/@galois/lu.m
/usr/share/octave/packages/communications-1.2.0/@galois/prod.m
/usr/share/octave/packages/communications-1.2.0/@galois/rank.m
/usr/share/octave/packages/communications-1.2.0/@galois/reshape.m
/usr/share/octave/packages/communications-1.2.0/@galois/roots.m
/usr/share/octave/packages/communications-1.2.0/@galois/sqrt.m
/usr/share/octave/packages/communications-1.2.0/@galois/sum.m
/usr/share/octave/packages/communications-1.2.0/@galois/sumsq.m