The clone command normally ensures that source blocks can't be overridden, but it is best to not need to rely on that failsafe to begin with.

Players interested in automating their commands in Minecraft will have to use Command Blocks, but they’ll need to update their settings to add them into the game.

You can get a command block in your Minecraft Java or Bedrock world using cheats and a special chat command.

Minecraft: Education Edition can now teach kids how to code with the new Code Builder tool and the 'Agent', an in-game robot. Mojang will add Command Blocks in Education Edition later this year.