I use this command in the terminal to run the minecraft launcher with java 8:
/home/max/Java/jre1.8.0_25/bin/java -jar Minecraft.jar
I included the full java path because I installed it on
/home as a normal user and i want to include it.
That command works, it opens the launcher with Java 8 but I want to make a bash file so I don't have to open the terminal. And, most important, I don't want the terminal to remain open when I click play in the Minecraft launcher and the game starts.
Now if i close manually the terminal when the game have started, the game is closed too.