http://www.nagios.org/%|%Nagios%|% (pronounced /ˈnɑːɡi.oʊs/) is a popular open source computer system and network monitoring software application. It watches hosts and services, alerting users when things go wrong and again when they get better. [[Refer to Wojciech's book, various articles.]] <
> [[Refer to [moodss] connection.]] http://www.ibm.com/developerworks/aix/library/au-nagios/%|%IBM article with Tcl example%|% <
> http://nagiosplug.sourceforge.net/developer-guidelines.html%|%Plugin Development Guidelines%|% <> Glossary