Advanced Intrusion Detection Environment (file mod checker)
AIDE is a tool for monitoring file system changes. It can be used to detect unauthorized monitored files and directories. It was written to be a simple and free alternative to Tripwire. o File attributes monitored: permissions, inode, user, group file size, mtime, atime, ctime, links and growing size. o Multiple checksums and hashes supported o Plain text configuration files and database for simplicity. o Rules, variables and macros that can be customized to local site or system policies. o Powerful regular expression support to selectively include or exclude files and directories to be monitored. o gzip database compression if zlib support.
Homepage: https://github.com/aide/aide