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

How to Install SageMath on Ubuntu 19.04 Disco Easy Guide

September 8, 2019 | By the+gnu+linux+evangelist.

Installing

  1. 2. Setting Up Repository

    Enable the SageMath Ubuntu PPA Repository

    Enabled SageMath Ubuntu PPA
  2. 3. Installing

    Then to Install SageMath for Ubuntu
    Simply run:

    sudo apt install sagemath-upstream-binary

    If Got “User is Not in Sudoers file” then see: How to Enable sudo

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