Download first Nagios installation core and plugins Install some necessary compilers using the command : sudo  apt-get install build-essential Install GD Libraries using the command :

What will you do if your grub is not installed or your grub boot loader is corrupted in Debian? Boot System with Debian CD Go to Advance option in in the first Installer boot menu. Go to Rescue mode Choose your system language Choose your country, territory or area Choose your Keymap to use Configure …

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