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You need to be in creative mode in order to input commands into the command block.
Command blocks can only be obtained using the give command and can only be successfully used by server operators in creative mode.The command block will perform certain commands when it receives a redstone current, these commands can be set by right-clicking on the block.
the command block doesn't have an ip.
There is no command block in minecraft. If you go to the Minecraft WiKi it will have all the information you need for anything in the game.
The only way to get a command block in Minecraft is to have cheats on in your world.Once you generated a world like that, type in the following command:/give [your Minecraft character's name] 137 [amount up to 64]That will give you a command block.
If it is single player commands you are talking about, "flammable" changes whether a block is flammable or not (wood, leaves, and TNT are flammable)Use this command in the format:flammable [CATCH] [SPREAD] - Sets the specified block at the flammability level
Command block id: 138Type these in commands and replace with your username:/give 138(v1.7.9-) OR/give command_block
You can't craft it, it can only be obtained through the /give command.
Command blocks currently can not be crafted. In creative mode the command /give YOURPLAYERNAME 137 1 will give you 1 command block (all you need in creative).
you send a redstone signal to it
you cannot directly open a door with a command,but there are ways to open doors with command blocks:like have a command block next to a comparater (in the snapshot at mojang.com) and have the command block reapatadly get powerd by a clock and in the command block have:/testfor @a/p/f/r[selectors] and wire the comparator to the door and when someone meets the testfor selector the door opens!
Command blocks are only obtained by creative or mods. You must be in creative mode in order to successfully type a command into the command block, otherwise you will be prompted to be in creative mode.