/usr/share/octave/packages/symbolic-2.2.4/private/ is in octave-symbolic 2.2.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/symbolic-2.2.4/private/extractblock.m
/usr/share/octave/packages/symbolic-2.2.4/private/indent_lines.m
/usr/share/octave/packages/symbolic-2.2.4/private/magic_double_str.m
/usr/share/octave/packages/symbolic-2.2.4/private/magic_str_str.m
/usr/share/octave/packages/symbolic-2.2.4/private/my_print_usage.m
/usr/share/octave/packages/symbolic-2.2.4/private/mystrjoin.m
/usr/share/octave/packages/symbolic-2.2.4/private/mystrsplit.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_copy_vars_from.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_copy_vars_to.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_format_cmd.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_header.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_header.py
/usr/share/octave/packages/symbolic-2.2.4/private/python_ipc_driver.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_ipc_popen2.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_ipc_sysoneline.m
/usr/share/octave/packages/symbolic-2.2.4/private/python_ipc_system.m
/usr/share/octave/packages/symbolic-2.2.4/private/readblock.m
/usr/share/octave/packages/symbolic-2.2.4/private/valid_sym_assumptions.m
/usr/share/octave/packages/symbolic-2.2.4/private/write_lines.m