Installing Eclipse CDT and build-essentials to offline Ubuntu

On my offline Ubuntu I use Eclipse C++ (CDT) and build-essentials to build C++ projects. To install Eclipse C++ (CDT) and build-essentials to offline Ubuntu:

1. Download Linux version of Eclipse C++, copy to offline Ubuntu and extract. You can directly run eclipse without any further installation, but you need to finish the following steps to build a C++ project.
2. On your Windows PC that is connected to the internet, install a virtualizer like VirtualBox  and install Ubuntu Desktop 22.04 as virtual machine.
3. Enable Windows - Ubuntu file sharing.
4. Use the following shell script to download build_essentials on your online PCs Ubuntu virtual machine and its dependencies. You can copy these downloads to your offline Ubuntu and install them following the steps written as comments down below: