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

Step-by-step – Trac Install Ubuntu 16.04 Xenial LTS Gnu/Linux

June 9, 2019 | By the+gnu+linux+evangelist.

PIP Setup

  1. 2. Installing PIP

    How to Install Python PIP in Ubuntu GNU/Linux

    PIP Ubuntu Installation Guide

    And then Upgrade PIP with:

    pip install --upgrade pip

    Or:

    sudo pip install --upgrade pip