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Update Server
sudo apt-get update && apt-get upgrade && apt-get dist-upgrade
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Install necessary packages
sudo apt-get install \ unzip \ wget \ build-essential \ apache2 \ apache2-utils \ php5-gd \ libgd2-xpm-dev \ libapache2-mod-php5 \ postfix \ libssl-dev
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When postfix asks, set your mail config to match your situation.
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If you are unsure, Internet Site is probably what you are looking for.
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Next we will need to set up the user and group that Nagios will operate as.
