Insight: Install Suru Icon Theme On Ubuntu 17.10
Suru icon is probably going to be the default theme in Ubuntu 18.04 LTS. Suru is an open source FreeDesktop icon project by Sam Hewitt. As now Suru for the desktop is still in-development, you might not get what it is supposed to be. Your ubuntu will not get full icons as it is supposed to be in full mode.
How To Install Suru Icon Theme On Ubuntu 17.10
Before installing, download the required file From This Link.
Now using following command:
sudo apt-get update
gsettings set org.gnome.desktop.interface icon-theme Suru
To remove Suru