Chroot inner image script
after install
Set custom DNS servers on Ubuntu 18.04 or 20.04 - Ricmedia
I'll show you three methods to set custom DNS servers on Ubuntu including instructions to reset your connection back to defaults if you need to. Below each guide is a video version for further explanation. Please note* this guide is for Ubuntu 18.04 or 20.04.
https://www.ricmedia.com/set-custom-dns-servers-on-ubuntu-18-or-20/

Ubuntu 20.04 Remote Desktop Access from Windows 10
In this tutorial we will be sharing an Ubuntu 20.04 desktop with a Windows 10 client. In this tutorial you will learn: How to share desktop on Ubuntu How to open Windows 10 client How to remotely connect to Ubuntu Desktop share Category Requirements, Conventions or Software Version Used System Installed Ubuntu 20.04 or upgraded Ubuntu 20.04 Focal Fossa Other Privileged access to your Linux system as root or via the sudo command.
https://linuxconfig.org/ubuntu-20-04-remote-desktop-access-from-windows-10

How to switch APT mirror from the commandline?
Asked Let's assume that we are using Ubuntu 18.04 LTS (Bionic Beaver). I know GUI ways to switch currently used APT mirror. User should open Software & Updates ( software-properties-gtk or software-properties-kde) and navigate to Ubuntu Software ( Kubuntu Software) tab and then select mirror in Download from list: But how to switch APT mirror from the commandline?
https://askubuntu.com/questions/1093451/how-to-switch-apt-mirror-from-the-commandline
How to create a custom Ubuntu ISO with Cubic
If you're looking to build a custom Linux disk image that's based on Ubuntu, Cubic makes it easy. Here's what you need to know. If you are planning to roll out numerous Ubuntu-based servers, you can download the default ISO, install the operating system on each machine, and then install the necessary software.
https://www.techrepublic.com/article/how-to-create-a-custom-ubuntu-iso-with-cubic/
우분투 20.04 카카오톡 설치하기
안녕하세요. 프즈입니다. 우분투에 카카오톡 설치하는 방법 찾아보면 이미 많은데요. 우분투가 20.04이기도 하고 카카오톡이 최근 버전 업그레이드하면서 잘 안 되는 부분도 있고 해서 따로 정리할 겸 해서 올려요~ 카카오톡이 OS를 어떻게 체크하는지 모르겠는지 나중에는 아예 안될지도 모르겠다는 불안감이 드네요 일단 카카오톡 설치하려면 다운로드하여야 하는데요. 우분투에서 wine이라는 프로그램으로 설치 진행할 때 최신 OS가 아니라며 거부합니다.
https://tolovefeels.tistory.com/6

Seonglae Cho