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

How to Enable Init.d Service on Debian-Based Systems

March 2, 2021 | By the+gnu+linux+evangelist.

GNU/Linux Debian Enabling ini.d Service at Boot

This Tip shows you How to Enable Service on System Boot in GNU/Linux Debian/Ubuntu-based OSes.

And the update-rc.d is the Debian utility to install and remove System-V style init Script Links.

How to Enable init.d Service on Debian-based - Featured
  1. Enabling Service

    Now to Enable Service on Startup
    Simply play:

    sudo update-rc.d [MYSERVICE] defaults
    And so for instance to enable Apache on Boot use:
    sudo update-rc.d apache2 defaults