How to program the Minecraft plugin to program a command so that it can only be executed once per player?

How to program the Minecraft plugin to program a command so that it can only be executed once per player?

Please write it down in the answers

If the player's uid could be stored in a database where yours is uid and danaben executed, if executed is not yet one the command is executed and a one in the table is written. The next time you try to execute the command, it will be detected that the user with uid in Executed in the table has a 1 and the command is not executed.

It's best to create a database where you enter a property that fits to this function. Once the command is executed, it will be added to your database. And if you do it again, then test the program first einrm entry in the database, if it was schonmal executed. If so, nothing happens.

Create an in-game scoreboard and increase this for each player who enters the command on 1. When entering the command, you must check whether the scoreboard is already 1, or even 0.

Then you save yourself annoying extra files / databases you have with the other solutions here, because the whole thing is easily controlled by in-game files (the scoreboards).