Change hostname on Ubuntu 18.04 LTS

If you have Cloud cloud-ini installed you will have to edit to preserve your new hostname. When that is done, run the rename command Edit /etc/hosts so it corresponds with your new hostname You can verify your changes by running At last, reboot and it should show the correct hostname.

Upgrade Windows edition with Dism

Have you downloaded the Evaluation ISO and want to make it real? Not a problem with Dism. The above key is for Server 2016 Standard AVMA activation. You can find more keys for that here if you have Datacenter on your host. Dism documentation:

How to safely clean up WinSxS

Windows Update may in some occasions not automatically clean up after it self. The fastest and safest way to do so is to run the following. For more options and documentation you can read the source here;