sudo add-apt-repository ppa:tualatrix/ppa
sudo apt-get update
sudo apt-get install ubuntu-tweak
However, the installation failed due to network problems, so download and install directly, address:
http://ftp.heanet.ie/pub/www.getdeb.net/getdeb/ubuntu/pool/apps/u/ubuntu-tweak/ubuntu-tweak_0.8.7-1~getdeb2~xenial_all.deb
After downloading ubuntu-tweak-master.zip
$ sudo dpkg -i ubuntu-tweak_0.8.7-1getdeb2xenial_all.deb
Dependency problem solving: http://www.linuxidc.com/Linux/2017-01/140063.htm
$ sudo apt-get -f install
In addition, this is also possible (this is easier)
sudo apt-get install unity-tweak-tool
Website: https://link.jianshu.com?t=https://github.com/anmoljagetia/Flatabulous/archive/master.zip
After downloading Flatabulous-master.zip
$ unzip Flatabulous-master.zip
$ $ sudo mv ./Flatabulous-master /usr/share/themes/
sudo add-apt-repository ppa:noobslab/icons
sudo apt-get update
sudo apt-get install ultra-flat-icons
In addition, you can also use sudo apt-get install ultra-flat-icons-orange or sudo apt-get install ultra-flat-icons-green to install the other two colors.
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