Installing the Nagios Plugins

1. Refresh the repository:

   sudo apt-get update

2. Install the dependencies:

   sudo apt-get install -y autoconf gcc libc6 libmcrypt-dev make libssl-dev wget bc gawk dc build-essential snmp libnet-snmp-perl gettext

3. Change the directory to your home directory:

   cd ~

4. Download the nagios plugins source codes:

   wget --no-check-certificate -O nagios-plugins.tar.gz https://github.com/nagios-plugins/nagios-plugins/archive/release-2.3.3.tar.gz

5. Extract the downloaded source codes:

   tar zxf nagios-plugins.tar.gz

6. Change to the directory of the newly extracted source codes:

   cd nagios-plugins-release-2.3.3

7. Setup and configure:

   sudo ./tools/setup
   sudo ./configure

8. Compile the source codes:

   sudo make

9. Install the plugins to /usr/local/nagios/libexec directory:

   sudo make install