Here is How to install qt4-default in Ubuntu 18.04. Just copy and paste the commands below into your Ubuntu terminal to get this package.
How to install qt4-default in Ubuntu?
Update your system first then install qt4-default package in your Ubuntu os. Open your Ubuntu terminal and just copy and paste these commands:
sudo apt update sudo apt install qt4-default
To install this package forcefully use these commands:
sudo apt update -y sudo apt install qt4-default -y
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