Java: instalar en ubuntu

ubuntu 14.04 *unnatended* ======================

sudo apt-get -y -q update
sudo apt-get -y -q install software-properties-common htop
sudo add-apt-repository -y ppa:webupd8team/java
sudo apt-get -y -q update
sudo echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | sudo /usr/bin/debconf-set-selections
sudo apt-get -y -q install oracle-java8-installer

debian =========================================
su -
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
apt-get install oracle-java8-installer
exit

ubuntu =======================================
sudo apt-get install python-software-properties
apt-get install software-properties-common -y
apt-add-repository ppa:webupd8team/java -y
apt-get update
echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | sudo /usr/bin/debconf-set-selections
apt-get install oracle-java7-installer -y

=======================================

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer