ok, so I have multiple versions of a game running(minecraft). I use one version of minecraft for my younger brother, and one for myself. In windows, there's my minecraft.bat file:
set APPDATA=E:\backup\Minecraft\minecraft folders\1.8 MC\data bin\minecraft.exe
this is for me, and starts minecraft from mu hard drive, instead of Appdata. now I completely removed windows, and use an ubuntu-only computer. is there any way to do this?