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

Step-by-step Ubuntu Adding Extras Repository Easy Guide

Enabling Ubuntu Extras Repository

Hi! The Tutorial shows you Step-by-Step How to Add Ubuntu Extras Repository in Ubuntu-Based GNU/Linux OSes.

And Ubuntu Extras Repositories may contains some Recent Extras Stuff that you may want Installed on your System.

Especially relevant: using the Apt Default Release Setup after this the System Stability is Granted!

Finally, this Setup is valid for all the Ubuntu Linux Based Distros like:

Linux Mint
Lubuntu
Kubuntu
Xubuntu
Zorin OS
Elementary OS
Linux Lite
Bodhi Linux
Kde Neon
Pop!_OS
Voyager
Trisquel
LXLE
feren OS
Peppermint
Q4OS
Linux Ultimate Edition

How to Add Ubuntu Repository for Ubuntu-based Systems - Featured

GNU/Linux Ubuntu Enabling Extras Repo Guide

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