2. Installing Needed Packages
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Installing Required Packages
For Zorin OS Linux:sudo apt install gcc build-essential libaio1
If Got “User is Not in Sudoers file” then see: How to Enable sudo
$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }