After AIDE is installed and the config's listed below have been setup first one needs to create the first aide database (its baseline) with aide -i That creates a new /var/lib/aide/aide.db.new.gz file which should then be renamed to /var/lib/aide/aide.db.gz

Once the baseline database has been created, aide should be configured to check its database a minimum of once per day. A cron job with /usr/sbin/aide -C -V2 will do this. Anomolies should be investigated. When legitimate updates are done first check the machine manually, then run your updates, then run /usr/sbin/aide -u; mv /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz