Install Arc Icon Theme

I used these steps to install the Arc icons on Debian 9 Mate, but judging by the steps, you should be able to run this on other distros.

# Install git in case you havent got it already
sudo apt install git -y

# Use git to clone the git repository and go into it.
git clone https://github.com/horst3180/arc-icon-theme --depth 1
cd arc-icon-theme

# Install the autoreconf package so you can then run autogen
sudo apt-get install dh-autoreconf
./autogen.sh --prefix=/usr

# Install (move files to relevant place and set up symlinks)
sudo make install

After that, if you are using Debian Mate, apply the icons by:

1. Go to System > Preferences > Look and feel > Appearance.
2. Click on your theme and then the Customise... button.
3. Click the Icons tab (3rd tab).
4. Select Arc and then close.

Building Cache

You may wish to build the icon cache afterwards by running:

sudo gtk-update-icon-cache /usr/share/icons/Arc/

References

• Github - Arc Icon Theme
• Github Issue - ./autogen.sh: 10: ./autogen.sh: autoreconf: not found