Absolute beginner - ubuntu 8.10 & nagios 3.x config

hi!
i’m a student and new to open source OS & nagios. can you tell me how to configure & save *.cfg files for nagios in terminal, i mean the command line. step by step pls…
thanks in advance

I would spend sometime reading the documentation on about Quick Start…

The file localhost.cfg is a very good place to start…

tk