Basic Prerequisite before upgrading any version of Ubuntu, Mint and it’s Derivatives

The golden era for Focal Fossa is around the corner and this post shall always be up to the par for any version behold for any Debian aka Ubuntu/Mint based distro and it’s derivatives once and for all, as it’s remarkably easy and a must chore for every Linux enthusiasts out there with a flare of geeky-ness.

We shall be taking about few commands later which many of you might be aware of as a sys-admin chore or anything in general related to system maintenance but let’s get hands dirty on DNS rather here using a public DNS provided by your local ISP. We shall be considering OpenDNS or Google DNS.

to OpenDNS or Google DNS preferably.

## Open and change it into EITHER OpenDNS or Google DNS
## Remove other DNS and DNS generated by NetworkManager
$ leafpad /etc/resolv.conf

## OpenDNS ##
nameserver 208.67.222.222
nameserver 208.67.220.220

## Google DNS ##
nameserver 8.8.8.8
nameserver 8.8.4.4

Save and close the file, use any text editor of your choice here.

Before you start updating, clear all apt caches.

sudo apt clean

And finally keep your Kali Linux up to date:

sudo apt update && apt upgrade -y && apt dist-upgrade -y

Enjoy.