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

Step-by-step – Qt4 Installation in Linux Mint 20

August 24, 2020 | By the+gnu+linux+evangelist.

GNU/Linux Mint 20 Installing Qt4 – QuickStart Guide

Hi! The Tutorial shows you Step-by-Step How to Install Qt4 in GNU/Linux Mint 20.x Ulyana/Ulyssa/Uma/Una LTS Desktop.

And Qt4 for Mint 20 is not any more supported from the Canonical Apt Repositories.

Finally, this guide includes detailed instructions about to Add Qt4 PPA Repository for Linux Mint 20.

Qt4 Linux Mint 20 Installation Guide - Featured
  1. 1. Accessing Shell

    Open a Terminal window
    (Press “Enter” to Execute Commands)

    Qt4 Linux Mint 20 Installation Guide - Open Terminal Shell Emulator
    In case first see: Terminal QuickStart Guide.