/usr/share/hol88-2.02.19940316/Library/arith/ is in hol88-library-source 2.02.19940316-19.
This file is owned by root:root, with mode 0o755.
..
/usr/share/hol88-2.02.19940316/Library/arith/arith.ml
/usr/share/hol88-2.02.19940316/Library/arith/arith_cons.ml
/usr/share/hol88-2.02.19940316/Library/arith/decls.ml
/usr/share/hol88-2.02.19940316/Library/arith/exists_arith.ml
/usr/share/hol88-2.02.19940316/Library/arith/gen_arith.ml
/usr/share/hol88-2.02.19940316/Library/arith/instance.ml
/usr/share/hol88-2.02.19940316/Library/arith/int_extra.ml
/usr/share/hol88-2.02.19940316/Library/arith/norm_arith.ml
/usr/share/hol88-2.02.19940316/Library/arith/norm_bool.ml
/usr/share/hol88-2.02.19940316/Library/arith/norm_ineqs.ml
/usr/share/hol88-2.02.19940316/Library/arith/prenex.ml
/usr/share/hol88-2.02.19940316/Library/arith/qconv.ml
/usr/share/hol88-2.02.19940316/Library/arith/rationals.ml
/usr/share/hol88-2.02.19940316/Library/arith/sol_ranges.ml
/usr/share/hol88-2.02.19940316/Library/arith/solve.ml
/usr/share/hol88-2.02.19940316/Library/arith/solve_ineqs.ml
/usr/share/hol88-2.02.19940316/Library/arith/streams.ml
/usr/share/hol88-2.02.19940316/Library/arith/string_extra.ml
/usr/share/hol88-2.02.19940316/Library/arith/sub_and_cond.ml
/usr/share/hol88-2.02.19940316/Library/arith/sup-inf.ml
/usr/share/hol88-2.02.19940316/Library/arith/term_coeffs.ml
/usr/share/hol88-2.02.19940316/Library/arith/theorems.ml
/usr/share/hol88-2.02.19940316/Library/arith/thm_convs.ml