Make A Stack/Column of Command Blocks

Question

In Minecraft, how do you make those massive columns/stacks/pillars of command blocks? I tried making one but it didn't work. Here's my command:

/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:100,Riding:{Block:command_block,Time:100,TileEntityData:{Command:/say test}}}

It was meant to make a redstone block with a command block on top of it with the command to say test but instead I only get a redstone block.

I've looked this up but have found nothing on making these pillars of command blocks.

Answer 1

You must add the id:FallingSand tag to each block you want to stack. So, you're command should be:

/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:100,Riding:{Block:command_block,Time:100,TileEntityData:{Command:/say test},id:FallingSand}}

Explanation

It is like when making any entity riding another entity. When not adding the id tag to the stacked entities (FallingSand blocks), the command block will not know which entity it should summon that the FallingSand is riding on. Like for example, when you want to make a Zombie riding a Bat and do /summon Zombie ~ ~ ~ {Riding:{}}, it will not know that you want the entity that the Zombie is riding must be a Bat, but when you do /summon Zombie ~ ~ ~ {Riding:{id:Bat}}, it will know that the Zombie should ride a Bat. The FallingSand is used in the same way as any other entities when riding each other.

Answer 2

The 1.10 version is:

/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Passengers:[{id:FallingSand,Block:command_block,Time:1,Command:{say hi}}, {id:FallingSand,Block:_what you want_,Time:1}]}

I am doing this off of memory, so it may not be that, tell me if it isn't, I'll fix it.

And I couldn't remember the /tellraw command so I just copied it of of a site and pasted it and I was good.

Answer 3

See if this command works:

/summon FallingSand ~ ~1 ~ {Time:1,Block:command_block,TileEntityData:{Command:},Passengers:[{id:FallingSand,Time:1,Block:redstone_block,Passengers:[{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:},Passengers:[{id:FallingSand,Time:1,Block:redstone_block,Passengers:[{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:},Passengers:[{id:FallingSand,Time:1,Block:redstone_block,Passengers:[{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:}}]}]}]}]}]}]}

Answer 4

Update: Another, even simpler way to do this is to press Shift when right-clicking the command block. That will let you place the new block on any clicked face, even the top one. When flying, you can even combine an initial press of Space with pressing Shift simultaneously to allow you to create stacks of command blocks without needing any scaffolding.

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Original answer

I needed to do this in Bedrock 1.19, and the answer turned out to be pleasingly simple:

/setblock ~~~ command_block ["facing_direction":1]

That will put one at your feet pointing up. Then correct the coordinates based on where the block now is, and increment the Y coordinate. So the next two might be:

/setblock 0 11 0 command_block ["facing_direction":1]
/setblock 0 12 0 command_block ["facing_direction":1]

To do the same in Java 1.19, just start with:

/setblock ~ ~ ~ minecraft:command_block[facing=up]