VERSION=${1:-$(VBoxManage -v | grep -o "^[0-9.]*")}
echo Installation de Oracle VirtualBox Extension-Pack version $VERSION
echo
sleep 1
cd /tmp
wget https://download.virtualbox.org/virtualbox/$VERSION/Oracle_VM_VirtualBox_Extension_Pack-$VERSION.vbox-extpack
echo y | VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-$VERSION.vbox-extpack