Install Maven 3.3.3 on Ubuntu 14.04

maven-333.sh

#!/bin/sh

sudo apt-get purge -y maven
if ! [ -e .semaphore-cache/apache-maven-3.3.3-bin.tar.gz ]; then (cd .semaphore-cache; curl -OL http://mirror.olnevhost.net/pub/apache/maven/maven-3/3.3.3/binaries/apache-maven-3.3.3-bin.tar.gz); fi
sudo tar -zxf .semaphore-cache/apache-maven-3.3.3-bin.tar.gz -C /usr/local/
sudo ln -s /usr/local/apache-maven-3.3.3/bin/mvn /usr/bin/mvn
echo "Maven is on version `mvn -v`"

you need to add these 2 lines

echo "export M2_HOME=/usr/local/apache-maven-3.3.3" >> ~/.profile
. ~/.profile