In this article I will show you how to install the new Ubuntu 13.04 Raring Ringtail on the Google and Asus tablet, Nexus 7.

There is an Ubuntu 13.04 version specially created for the Nexus 7 tablet. To achieve a succesfull Ubuntu Raring Ringtail installation on Nexus 7, you need an Ubuntu OS running, the Android SDK and a micro USB cable, plugged to your Nexus 7.
Installing Ubuntu 13.04 on Nexus 7:
Step 1: Add the repository:
$ sudo add-apt-repository ppa:ubuntu-nexus7/ubuntu-nexus7-installer
Step 2: Update the system:
$ sudo apt-get update
Step 3: Install ubuntu-nexus7-installer:
$ sudo apt-get install ubuntu-nexus7-installer
Step 4: Download Android SDK 17:
$ wget dl.google.com/android/android-sdk_r17-linux.tgz
Step 5: Extract the android-sdk_r17-linux.tgz archive:
$ $ tar -xzvf android-sdk_r17-linux.tgz
Step 6: cd to android-sdk-linux/tools from the extracted folder:
$ cd android-sdk-linux/tools
Connect your Nexus 7 Tablet to the computer, via USB.
Step 7: Run fastboot devices:
After this command you should see your device’s id. If so, proceed to the next step.
$ sudo fastboot devices
Step 8: Unlock the device:
$ sudo fastboot oem unlock
Now, on your tablet screen will be selected the YES Unlock Bootloader. Just turn on the tablet to go to the next step.
Step 9: Reboot the tablet:
$ sudo fastboot reboot-bootloader
Step 10: Install Ubuntu 13.04 on Nexus 7. Now, launch the Ubuntu Nexus 7 Installer (if you type nexus in the unity search you will easily find the installer) and follow the installing instructions.
Now the Ubuntu 13.04 for your Nexus 7 will be downloaded and the installation will begin. It depends on your internet connection if the installation will take less time or not.