How do I download qt5-default for Ubuntu 20.04 LTS?

Question

I need an easy explanation because I am very new to Linux and I want to use an app that makes use of qt5 as requested by their website.

Answer 1

This would be a one-liner in Terminal, but let's make sure you're updating apt first:

1. Update apt:

   sudo apt update
   

2. Install qt5:

   sudo apt install qt5-default
   

3. There is no step 3

That should do it for you

Answer 2

Install Qt5Widgets in Ubintu 20.04 by issuing the following commands in terminal:

$ sudo apt-add-repository universe
$ sudo apt update
$ sudo apt install -y qtcreator qtbase5-dev qt5-qmake cmake