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

How to Reduce Computer Eye Strain on CentOS 7.x Desktops

May 3, 2017 | By the+gnu+linux+evangelist.

Installing

  1. 4. Installing PIP

    Install Python 2/3 PIP for Red Hat GNU/Linux

    Python PIP Install Guide

  2. 5. Installing Dependencies

    Then Install Required Packages

    sudo pip install pexpect

    And again:

    sudo yum install pyxdg gnome-python2-gconf 
pygtk2-libglade python-appindicator

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

  3. 6. Installing F Lux

    Installing f.lux GUI
    First, Access the Target:

    cd /tmp/xflux-gui

    And then to Make Setup:

    sudo python ./setup.py install

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