/usr/share/man/man5/localgroups.5.gz

This file is indexed.

/usr/share/man/man5/localgroups.5.gz is in inn2 2.5.3-3ubuntu1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/man/man5/../man8/docheckgroups.8.gz