LINUX FIX: apt-get update: E: updating from such a repository can't be done securely and is disabled

Описание: Have you ever gotten the error - "updating from such a repository can't be done securely and is therefore disabled by default"? Well, thankfully this is very easy to fix and all we have to do is add a couple of text to /etc/apt/sources.list

Applies to Debian-based linux distributions. (Ubuntu/Kali/Linux Mint) #linuxtutorialvideos #ubuntututorialvideos #ubuntulearningtutorial #centostutorialvideos #centosadministrationtutorial #learninghowtoprogramgames #learningunityprogramming #simplecodingtutorial #easycodingtutorials #veryeasycodingtutorials #unityeasygametutorial