Google Driver Ubuntu 13.04 :ref http://www.howopensource.com/2012/11/install-insync-google-drive-client-in-ubuntu-12-10-12-04-ppa/

To add PPA in Ubuntu

First add the Insync public GPG key for authentication. Run the below command in the terminal and issue the password for the user, when prompted.

wget -O - https://d2t3ff60b2tol4.cloudfront.net/services@insynchq.com.gpg.key | sudo apt-key add -

After adding the key, Copy and paste the below command to add Insync repository to your apt repository.

sudo sh -c 'echo "deb http://apt.insynchq.com/ubuntu $(lsb_release -sc) non-free" >> /etc/apt/sources.list.d/insync.list'

Now update your repository by running the below command.

sudo apt-get update

To install Insync in Ubuntu

For Unity & Xfce Users:

sudo apt-get install insync-beta-ubuntu

That’s it. Insync is installed and ready to sync Google Drive files.
Go to Dash and type Insync, and start the application by selecting it.

Now you can share or sync files. Check the screen shot.