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

How to Install Winetricks on CentOS Gnu/Linux Distro

GNU/Linux CentOS Installing Winetricks Guide

How to Install Winetricks in CentOS GNU/Linux desktops.

And Winetricks for CentOS is a Helper Script to Download and Install various freely shareable Runtime Libraries needed to run some Programs in Wine.

So then, possibly follow instructions to Install the required WineHQ on CentOS GNU/Linux Computers.

Finally, this guide includes detailed instructions on Getting Started Install Windows Software with Winetricks on CentOS.

How to Install Winetricks on CentOS GNU/Linux Distro

GNU/Linux CentOS Winetricks Installation Guide