Unity Custom Launcher
Let’s say you need to add a custom launcher to Unity:
[Desktop Entry] Type=Application Name=MineCraft Exec=java -Xmx512M -Xms256M -jar /home/ashley/.minecraft/minecraft.jar Icon=/home/ashley/.minecraft/icon.png Terminal=false StartupNotify=true
~/.local/share/applications/ should do the trick for one user, placing it into
/usr/share/applications/ would work for everyone.
Just make sure you update
Icon. You should be able to leave the rest.