Set permissions on $/$etc$/$shadow to allow only root read and write access. Set permissions on $/$etc$/$gshadow to allow only root read and write access. Set permissions on $/$etc$/$group to allow root read and write access, and all others read access only. Set permissions on $/$etc$/$passwd to allow root read and write access, and all others read access only. Bonus Verify all accounts have passwords. Recall that if any user has the UID of $0,$ the system thinks they are root. Verify that no users have UID of $0$ besides root. If you find one that does, change the user's UID to any value greater than $1000.$ Provide a list of all permission changes that you make in a text file in your research