I'm running a Vanilla Minecraft: JE Server (v. 1.12.2) and so far so good.
There is only a problem I encountered: griefers. I've already set up a system that logs how many times a player uses a forbidden item (lava bucket, TNT etc...), warns them if they reach a certain limit and, if the user keeps spamming these blocks, adds them to a "team" of banned players that keep getting
/kill -ed 'till I ban them properly (this is the closest thing to ban via command blocks). However, one may be able to light a single tree using Flint and Steel, burn a whole forest as the fire propagates and get away with it. So I'd like to have a command block or function print a message to the server console (so it appears in the logs), which would look something like this:
**PlayerName** used FlintAndSteel
Obviously we are talking about a service/technical message so it doesn't have to be pretty at all. What I'd like to have is something to verify which player griefed the server at a certain time, without turning on commandBlockOutput which would otherwise cause massive spam in the server console, considering the amount of Command Blocks and Functions that run every tick.