Secrond is a light-weight cron implementation that allows running of user-specified programs at periodic scheduled times, handling tasks in intervals of seconds rather than minutes, as well as hours and days. While it is possible to achieve similar behavior by using a traditional cron daemon and adding calls to sleep() to the programs executed, it is impractical.
Viper is a system for completely automated installation and configuration of Debian GNU/Linux-based systems. It uses a modern approach with debian-installer and puppet, works with existing Debian packages, and does not require any custom patching of either install media, client, or server. The basis of the whole system is an LDAP server containing all configuration data.