Primeiro, precisamos ativar o repositório do universo. Para fazer isso, abra Software e Atualização via menu de aplicativos. Marque todos os repositórios universais da lista de reporte.
Clique em Recarregar para atualizar o Ubuntu. Em seguida, use o seguinte comando para instalar o Gnome Tweak Tool
sudo apt install gnome-tweak-tool
Saída:
$ sudo apt install gnome-tweak-tool
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
gnome-tweak-tool
0 upgraded, 1 newly installed, 0 to remove and 435 not upgraded.
Need to get 205 kB of archives.
After this operation, 1,198 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu artful/universe amd64 gnome-tweak-tool all 3.26.2.1-1ubuntu1 [205 kB]
Fetched 205 kB in 1s (106 kB/s)
Selecting previously unselected package gnome-tweak-tool.
(Reading database ... 145771 files and directories currently installed.)
Preparing to unpack .../gnome-tweak-tool_3.26.2.1-1ubuntu1_all.deb ...
Unpacking gnome-tweak-tool (3.26.2.1-1ubuntu1) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Processing triggers for desktop-file-utils (0.23-1ubuntu3) ...
Setting up gnome-tweak-tool (3.26.2.1-1ubuntu1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu5) ...
Processing triggers for hicolor-icon-theme (0.17-1) ...
Agora execute a ferramenta Gnome Tweak