/usr/share/hol88-2.02.19940316/contrib/Z/ is in hol88-contrib-source 2.02.19940316-19.
This file is owned by root:root, with mode 0o755.
..
/usr/share/hol88-2.02.19940316/contrib/Z/BirthdayBook.ml
/usr/share/hol88-2.02.19940316/contrib/Z/SCHEMA.ml
/usr/share/hol88-2.02.19940316/contrib/Z/TelephoneBook.ml
/usr/share/hol88-2.02.19940316/contrib/Z/arith-tools.ml
/usr/share/hol88-2.02.19940316/contrib/Z/define.ml
/usr/share/hol88-2.02.19940316/contrib/Z/hol-init.ml
/usr/share/hol88-2.02.19940316/contrib/Z/mk_Z.ml
/usr/share/hol88-2.02.19940316/contrib/Z/patch.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet/
/usr/share/hol88-2.02.19940316/contrib/ZET/zet/Makefile
/usr/share/hol88-2.02.19940316/contrib/ZET/zet/mk_zet.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet/zet.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet/zet_ind.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet/zet_tactics.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet11/
/usr/share/hol88-2.02.19940316/contrib/ZET/zet11/Makefile
/usr/share/hol88-2.02.19940316/contrib/ZET/zet11/mk_zet.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet11/zet.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet11/zet_ind.ml
/usr/share/hol88-2.02.19940316/contrib/ZET/zet11/zet_tactics.ml