Cnagios is a full-screen terminal interface for viewing Nagios HOST and SERVICE objects, and the durations of their current states. It’s lightning fast becauseit’s written in C using the curses library. And it’s super flexible because it uses the perl C library to shorten and alter host, service and plugin output and filter the displayed hosts or services.

cnagios can be downloaded via FTP from:

via Nagios Exchange – cnagios.
./configure –with-etc-dir=/etc/nagios3 –with-var-dir=/var/cache/nagios3
apt-get install libncurses-dev
apt-get install libperl-dev
make install