https://glimpse.me/blog/reset-minecraft-server/
world
https://pingperfect.com/index.php/knowledgebase/244/Minecraft--How-to-Make-Someone-OP-or-Operator-Without-Commands.html
https://www.spigotmc.org
https://www.spigotmc.org/wiki/spigot-installation/
https://getbukkit.org/download/spigot