As you add services, contacts, contact groups, commands, and devices to Nagios the bulk editing begins to become very tedious. Monarch is a great tool to manage Nagios configuration(.cfg) files. To install Monarch follow the instructions provided in the README.txt that comes with the product. Below I provide instructions to assist in that installation along with some tips and tricks that I learned along the way.
**UPDATE** I realized when reading back through this article that I had not included a download link for Monarch so click here to download Monarch to manage your Nagios configuration files.
How to Install Monarch