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

How to Install Cura on Gnu/Linux Distros

GNU/Linux Installing Ultimaker Cura Guide

How to Install Ultimaker Cura on GNU/Linux desktops – Step by step Tutorials.

And Ultimaker Cura for Linux prepares your Model for 3D Printing. Optimized, Expert-Tested Profiles for 3D Printers and Materials mean you can Start Printing Reliably in No Time.

Finally, this guide includes instructions on How to Getting Started with Cura on Linux Systems.

How to Install Cura on GNU/Linux Distros

GNU/Linux Ultimaker Cura Installation Guides