usage: micro-minecraft-launcher-1.2.dev5-linux-x86_64 [-h] [-c CONFIG] [-d GAME_DIR] [-l] [-u USER] [--auth-uuid AUTH_UUID] [--auth-access-token AUTH_ACCESS_TOKEN ...

Download the latest je2be.exe from releases for instant use. Note: when your input or output pack name contains any whitespace (like: "PristineNature v1.2 Java.zip"), use quotation marks at the start ...