TBH im not using a launcher. Im using a raspberry pi, it runs a version of linux called debian. To get minecraft i have to launch minecraft via the launcher to get files and such downloaded, but the game crashes via the launcher. So, if i wanted to get minecraft up and running, i have to start minecraft via terminal/ command line.
And yes this is not a cracked version of minecraft as it still requires username/ password in launcher to download files xd