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

How to Install DKMS on Gnu/Linux Distros

GNU/Linux Installing Dkms Guide

Hi! The Tutorial shows you Step-by-Step How to Install DKMS in GNU/Linux Distributions.

And the Dynamic Kernel Module Support for Linux is a Program/Framework that enables generating Linux Kernel Modules whose Sources generally reside Outside the Kernel Source Tree.

How to Install DKMS Linux - Featured

GNU/Linux Dynamic Kernel Module Support Installation Guide