Nannie’s basic purpose is to watch system files that should not be changed, at least in theory. It monitors them for change in inode, size, etc notifies you if a change occurs.
You can download it from the following link: https://packetstormsecurity.com/files/download/12770/nannie-0.9.tar.gz
Source: https://packetstormsecurity.com/files/12770/nannie-0.9.tar.gz.html