As its name, you can obtain a command block through commands. Make sense, right? There are 2 commands you can type in the chat (press T or Enter) to get a command block: /give @s minecraft:command ...

The command block is an orangey-red cube with TV sci-fi LEDs stuck to it. As part of a redstone circuit, it can be used to execute specific commands, like granting experience to a player.It’s ...