As you already know, Google (probably hates Linux users) does not provide a Linux client for its awesome Google Drive cloud storage service. But don't worry, as the open source community has its geniuses like Lorenzo Breda, who developed an unofficial Google Drive client for Linux, called Grive.

Adding the PPA Repository

This is an easy step, which requires you to open a Terminal by searching it in the Unity Dash or by pressing the CTRL+ALT+T key combination, and to paste the following code in the Terminal window:

sudo apt-add-repository ppa:thefanclub/grive-tools

Hit the Enter key, type your password when asked, and hit Enter again when asked if you want to add the repository. Do not close the Terminal.

Installing Grive Tools and Grive

Now, paste the following commands in the Terminal window, one by one, hitting enter after each one:

sudo apt-get update

sudo apt-get install -y grive-tools

Once installed, search the application on the Unity Dash by typing Grive, and open it. The application will ask for your password, so insert it and click OK, and then it will start to download and configure the latest version of the Grive application, which will take some time.