gnome tweaks
Installing Tweak Tool on Ubuntu 20.04 LTS Focal Fossa step by step instructions
$ sudo add-apt-repository universe
$ sudo apt install gnome-tweak-tool
$ gnome-tweaks
$ apt search gnome-shell-extension
$ sudo apt install gnome-shell-extension-gsconnect
$ sudo apt install $(apt search gnome-shell-extension | grep ^gnome | cut -d / -f1)
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