/usr/bin/install -c -m 775 -o nagios -g nagios -d /usr/local/nagios/var/rw chmod g+s /usr/local/nagios/var/rw *** External command directory configured *** You can continue with installing Nagios as follows (type 'make' without any arguments for a list of all possible options): make install-config - This installs *SAMPLE* config files in /usr/local/nagios/etc You'll have to modify these sample files before you can use Nagios. Read the HTML documentation for more info on doing this. Pay particular attention to the docs on object configuration files, as they determine what/how things get monitored!