$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Nagios on MX Gnu/Linux Easy Guide

August 17, 2019 | By the+gnu+linux+evangelist.

Packages Setup

  1. 2. Installing Packages

    Then Install the Required Packages
    So to Install the Packages run:

    sudo apt install php7.0-gd libgd2-xpm-dev build-essential/napache2 libapache2-mod-php7.0

    If Got “User is Not in Sudoers file” then see: How to Enable sudo