This is a complete, version-accurate reference for command blocks in Minecraft. All mechanics are documented based on actual in-game behavior across Java and Bedrock.
Command Index (Quick Reference) Full Command Reference 1. Command Blocks: What They Are 2. Command Syntax & Target Selectors 3. Command Block Types & Conditions 4. Redstone & Activation Logic 5. Basic Command Block Examples 6. Advanced Systems & Logic 7. Version Differences & History 8. Debugging & Common Failures