Informações da última versão: Ubuntu Linux 20.10 - Groovy Gorilla
java -version
java version "1.6.0_26"Java(TM) SE Runtime Environment (build 1.6.0_26-b03)Java HotSpot(TM) Server VM (build 20.1-b02, mixed mode)
cd /home/usuario/Downloads
java -Xmx2048M -Xms1024M -cp minecraft.jar net.minecraft.LauncherFrame
sudo apt-get remove openjdk
sudo wget http://www.medibuntu.org/sources.list.d/`lsb_release -cs`.list --output-document=/etc/apt/sources.list.d/medibuntu.list; sudo apt-get -q update; sudo apt-get --yes -q --allow-unauthenticated install medibuntu-keyring; sudo apt-get -q update && sudo apt-get install medibuntu-keyring && sudo apt-get update
sudo apt-get install sun-java6-jre
sudo update-alternatives --config java
cat /etc/issue
java -Xmx2048M -Xms1024M -cp /home/seuUsuario/minecraft.jar net.minecraft.LauncherFrame
java -Xmx2048M -Xms1024M -cp /home/fosforo/Downloads/minecraft.jar net.minecraft.LauncherFrame