How can i run Unity Hub from command line?

When i enter "/home/guest/Unity/Hub/Editor/2019.3.0a8/Editor/Unity" on the terminal, a message box appears:
"We recommend installing the Unity Hub for the best Unity experience. Visit http://unity3d.com/get-unity/download - Continue launching Unity - [Open project] [Create empty project] [Quit]" - So, how can we run Unity Hub directly from command line? Or do i have to reinstall Unity all the time i'm going to use Unity Hub?

 

Download https://public-cdn.cloud.unity3d.com/hub/prod/UnityHubSetup.AppImage
chmod +x the above
./UnityHubSetup

without unityhub then
cd /home/guest/Unity/Hub/Editor/2019.3.0a8/Editor/
./Unity

 

thanks!