/usr/share/dynare/matlab/particle/ is in dynare-common 4.4.1-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dynare/matlab/particle/auxiliary_initialization.m
/usr/share/dynare/matlab/particle/auxiliary_particle_filter.m
/usr/share/dynare/matlab/particle/conditional_filter_proposal.m
/usr/share/dynare/matlab/particle/conditional_particle_filter.m
/usr/share/dynare/matlab/particle/fit_gaussian_mixture.m
/usr/share/dynare/matlab/particle/gaussian_densities.m
/usr/share/dynare/matlab/particle/gaussian_filter.m
/usr/share/dynare/matlab/particle/gaussian_filter_bank.m
/usr/share/dynare/matlab/particle/gaussian_mixture_densities.m
/usr/share/dynare/matlab/particle/gaussian_mixture_filter.m
/usr/share/dynare/matlab/particle/gaussian_mixture_filter_bank.m
/usr/share/dynare/matlab/particle/importance_sampling.m
/usr/share/dynare/matlab/particle/index_resample.m
/usr/share/dynare/matlab/particle/local_state_space_iteration/
/usr/share/dynare/matlab/particle/local_state_space_iteration/local_state_space_iteration_2.m
/usr/share/dynare/matlab/particle/measurement_equations.m
/usr/share/dynare/matlab/particle/multivariate_smooth_resampling.m
/usr/share/dynare/matlab/particle/mykmeans.m
/usr/share/dynare/matlab/particle/neff.m
/usr/share/dynare/matlab/particle/online_auxiliary_filter.m
/usr/share/dynare/matlab/particle/probability.m
/usr/share/dynare/matlab/particle/probability2.m
/usr/share/dynare/matlab/particle/resample.m
/usr/share/dynare/matlab/particle/residual_resampling.m
/usr/share/dynare/matlab/particle/sequential_importance_particle_filter.m
/usr/share/dynare/matlab/particle/solve_model_for_online_filter.m
/usr/share/dynare/matlab/particle/spherical_radial_sigma_points.m
/usr/share/dynare/matlab/particle/traditional_resampling.m
/usr/share/dynare/matlab/particle/univariate_smooth_resampling.m
/usr/share/dynare/matlab/particle/unscented_sigma_points.m