slipwire.pl is a simple filesystem integrity checker. It compares the SHA-1 hashes of files to an initial state and alerts the user of any changes.
You can download it from the following link: https://packetstormsecurity.com/files/download/10424/slipwire.1-2.tar.gz
Source: https://packetstormsecurity.com/files/10424/slipwire.1-2.tar.gz.html