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

Step-by-step – Trac Installation in Ubuntu 20.04 Guide

October 20, 2020 | 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

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