Mariadb 10
sudo apt-get install mariadb-server
openJDK 8
sudo apt-get install openjdk-8-jdk
openJDK 7
sudo apt-get install openjdk-7-jdk
openJRE 7
sudo apt-get install openjdk-7-jre
7Zip unzip
sudo apt-get install p7zip-full 7z x <file>.zip
在不同JAVA版本間切換
sudo update-alternatives --config java