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

How to Update System on Gnu/Linux Distros

March 26, 2023 | By the+gnu+linux+evangelist.

GNU/Linux Updating System Guide

The tutorial shows you step-by-step How to Update Packages & System on GNU/Linux desktops – Step by step Tutorials.

And here I explain How to Update/Upgrade GNU/Linux easily on Command Line.

You may also be interested in learning How to Update/Upgrade Kernel.

How to Update System on GNU/Linux Distros

GNU/Linux System Update Guides