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

How to Install Flatpak on RHEL Distro

GNU/Linux RHEL Installing Flatpak Guide

How to Install Flatpak on Red Hat Enterprise based GNU/Linux desktops – Step by step Tutorials.

And Flatpak for RHEL is a technology for Building, Distributing, Installing and Running Linux Apps.

Finally, Flatpak is primarily targeted at the Linux desktop, although it can also be used as the basis for application distribution in other contexts, such as embedded systems.

How to Install Flatpak on Red Hat GNU/Linux Distro

GNU/Linux RHEL Flatpak Installation Guide