Start Minecraft without opening the launcher every time

minecraft-fast-start.sh

#!/bin/bash
# Start Minecraft without opening the launcher every time
# written by Gjum https://github.com/Gjum

# location to store the startup command:
faststart="$HOME/.minecraft/.faststart"

if [ -f "$faststart" ];then
    exec "$faststart"
else
    echo "Start Minecraft now as you usually do, then press enter"
    echo "    to capture the command to run Minecraft in $faststart"
    read
    pgrep -a java | grep "net.minecraft." | cut -d' ' -f2- > "$faststart"
    chmod +x "$faststart"
    echo "Done! Now you can close Minecraft."
    echo "Run this command again to start Minecraft."
    echo "If it does not work (updates, session expired),"
    echo "    or if you want to change the version/other settings,"
    echo "    just delete $faststart and run this again."
fi