Google Repositories (apt-get)

Add this line to /etc/apt/sources.list

• deb http://dl.google.com/linux/deb/ stable non-free

Import the key by running this

• wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add

Then of course run "apt-get update" and your ready to instantly install Google's apps using apt-get.

Reference Link