/usr/share/man/ is in gnat-7-aarch64-linux-gnu 7.3.0-16ubuntu3cross1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/man/man1/
/usr/share/man/man1/aarch64-linux-gnu-gnat-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnat.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatbind-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatbind.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatchop-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatchop.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatclean-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatclean.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatfind-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatfind.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatgcc.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnathtml-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnathtml.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatkr-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatkr.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatlink-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatlink.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatls-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatls.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatmake-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatmake.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatname-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatname.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatprep-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatprep.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatxref-7.1.gz
/usr/share/man/man1/aarch64-linux-gnu-gnatxref.1.gz