Updating Ubuntu 18.04.1 to 18.04.4 – Step-by-step
Hi! The Tutorial shows you Step-by-Step How to Update from Ubuntu 18.04.1 to 18.04.4 GNU/Linux.
Especially relevant: to fully Upgrade Ubuntu 18.04.1 to 18.04.4 is Required the Installation of the HWE (Hardware Enablement) Stack that is derived from Ubuntu 18.10.
Finally, with this Update also your Ubuntu Bionic Linux Kernel is Upgraded to 5.x!

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1. Terminal Quick-Start
How to Quick-Start with Command Line on Ubuntu
First, to Update the Apt Repo Sources with:
sudo apt update