Commands/execute

This article is about a command that executes other commands. For the command to kill a player or other entity, see Commands/kill.

execute

Permission level required	2‌[JE only] 1‌[BE only]
Restrictions	Cheats only‌[BE only]

/execute executes another command but allows changing the executor, changing the position and angle it is executed at, adding preconditions, and storing its result.

Java Edition

In Java Edition, there are twelve instructions (or sub-commands) for the /execute command. Multiple sub-commands are connected after /execute. Subcommands are divided into 4 categories: modify subcommands, condition subcommands, store subcommands, and run subcommand.

• Modify subcommands modify command variables and change the situation the command is executed, and execute subcommands following it with specific executor(s), execution position(s), execution dimension(s), execution rotation(s) and execution anchor.
• Condition subcommands are used to test whether certain conditions are true and output results or limit conditions of execution.
• Store subcommands can store the return values of the command in a scoreboard or the data of an entity, block entity, or storage, and can also change the maximum or current value of a boss bar.
• run subcommand is used for carrying out another command.

All needed sub-commands can be concatenated together. Subcommands other than the run subcommand can be arranged arbitrarily and used multiple times. But the run subcommand can only be used once and must be put at the end of the subcommands chain. A run subcommand or a condition subcommand finalizes the command, otherwise the command does nothing. The game processes these subcommands in order from front to end, for example, the following commands are different:

• All entities move one block forward: execute as @e at @s run tp ^ ^ ^1
• All entities are teleported to one block in front of the executor: execute at @s as @e run tp ^ ^ ^1

The game processes other subcommands before processing run subcommands, so the run subcommand cannot affect other subcommands. In some cases, the command may terminate halfway and does nothing.

After executed (if it does not terminate halfway), the command returns a success value and a result value (see #Store subcommand for details). These two values ​​come from the last subcommand (may be a condition subcommand or a run subcommand). Note that the return value of the command must be an integer, if not, it is rounded down. The success value is always 0 or 1. When the command fails, both return values ​​are 0. The two values can be stored by store subcommands. When the last subcommand (may be a condition subcommand or a run subcommand) is executed multiple times, return values of each will be stored after each execution.

/execute command also has a success count (whether or not terminates halfway), which is different from success and result value. This is usually 0 or 1, but if the last subcommand is executed many times separately (as perhaps with "/execute as @a -> execute") then success can be a number higher than 1. When executing it with a command block, the success count is returned to the command block, which can be checked by a conditional command block for success or be read with a redstone comparator.

There are twelve instructions (or sub-commands) for the /execute command, and each has its own special syntax, so describing syntax takes a large branching tree.

Command Syntax Tree-Diagram

Full syntax tree

/execute . . .

• … align <axes> -> execute
• … anchored <anchor> -> execute
• … as <targets> -> execute
• … at <targets> -> execute
• … facing (<pos>|entity <targets> <anchor>) -> execute
• … in <dimension> -> execute
• … positioned (<pos>|as <targets>) -> execute
• … rotated (<rot>|as <targets>) -> execute
• … store (result|success) . . .
  • … block <targetPos> <path> <type> <scale> -> execute
  • … bossbar <id> (max|value) -> execute
  • … entity <target> <path> <type> <scale> -> execute
  • … score <targets> <objective> -> execute
  • … storage <target> <path> <type> <scale> -> execute
• … (if|unless) . . .
  • … block <pos> <block> -> [execute]
  • … blocks <start> <end> <destination> (all|masked) -> [execute]
  • … data . . .
    • … block <sourcePos> <path> -> [execute]
    • … entity <source> <path> -> [execute]
    • … storage <source> <path> -> [execute]
  • … entity <entities> -> [execute]
  • … predicate <predicate> -> [execute]
  • … score <target> <targetObjective> . . .
    • … (<|<=|=|>|>=) <source> <sourceObjective> -> [execute]
    • … matches <range> -> [execute]
• … run <command>

where -> execute represents the start of another subcommand.

Modify subcommands

align

Updates the command's execution position, aligning to its current block position (an integer). Only applies along specified axes.

This is akin to flooring the coordinates – i.e. rounding them downwards.

Syntax

align <axes> -> execute

Arguments

<axes>: swizzle

Any non-repeating combination of the characters 'x', 'y', and 'z'. Axes can be declared in any order, but they cannot duplicate. (For example, x, xz, zyx, or yz.)

Result

Execution position in the given axes are floored, changing by less than 1 block.

Unparseable if the argument is not specified correctly.

Example

• Given (-1.8, 2.3, 5.9), /execute align xz changes the position to (-2, 2, 5).
• Given (2.4, -1.1, 3.8), /execute align yxz run spawnpoint @p ~ ~ ~ sets the player's spawnpoint to (2, -2, 3).

anchored

Sets the execution anchor to the eyes or feet. Defaults to feet.

Effectively recenters local coordinates on either the eyes or feet, also changing the angle the facing sub-command (of /execute and /teleport) works off of

Syntax

anchored <anchor> -> execute

Arguments

<anchor>: entity_anchor (eyes or feet)

Whether to anchor the executed command to eyes or feet

Result

Execution anchor is set to either the eyes or the feet.

Unparseable if the argument is not specified correctly.

Example

The effect of /tp is to move a target by placing its feet at the given position.

execute anchored eyes run tp ^ ^ ^ effectively teleports the executor's feet to where its eyes are (the execution position).

execute anchored eyes run tp ^5 ^ ^ means "place the executor's feet 5 blocks left of where its eyes are"

as

Sets the command's executor to target entity, without changing execution position, rotation, dimension, or anchor

Syntax

as <targets> -> execute

Arguments

<targets>: entity

Target entity/entities to become the new executor.

Must be a player name, a target selector or a UUID.

Result

Executor is updated to target entity (which changes the meaning of @s).

Unparseable if the argument is not specified correctly.

Terminates if <targets> fails to resolve to one or more valid entities (named players must be online).

When multiple entities are selected, next sub-command is executed once by each executor.

Example

Get data of all sheep: execute as @e[type=sheep] run data get entity @s‌^{[Java Edition only]}

Make all villagers in loaded chunks invincible: execute as @e[type=villager] run data merge entity @s {Invulnerable:1}‌^{[Java Edition only]}

at

Sets the execution position, rotation, and dimension to match those of an entity; does not change executor.

Syntax

at <targets> -> execute

Arguments

<targets>: entity

Target entity/entities to match position, rotation, and dimension with.

Must be a player name, a target selector or a UUID.

Result

Execution position, rotation, and dimension are updated to match target entity.

Unparseable if the argument is not specified correctly.

Terminates if <targets> fails to resolve to one or more valid entities (named players must be online).

When multiple entities are selected, next subcommand is executed once at each entity's execution position, rotation, and dimension.

Example

Move all sheep upward 1 block: execute as @e[type=sheep] at @s run tp ~ ~1 ~

Kill the player running the command, because "at" does not change the executor: execute at @e[type=sheep] run kill @s

facing

Sets the execution rotation to face a given point, as viewed from its anchor (either the eyes or the feet)

Syntax

facing <pos> -> execute

facing entity <targets> <anchor> -> execute

Arguments

Option: facing <pos>

<pos>: vec3

Coordinate to rotate towards

Must be a three-dimensional coordinates with floating-point number elements. Accepts tilde and caret notations.

Option: facing entity <targets> <anchor>

<targets>: entity

The target(s) to rotate towards

Must be a player name, a target selector or a UUID.

<anchor>: entity_anchor (eyes or feet)

Whether to point at the target's eyes or feet

Result

Execution rotation is updated to face given position or targets

Unparseable if the argument is not specified correctly

Terminates if <targets> fails to resolve to one or more valid entities (named players must be online)

When multiple entities are selected, next subcommand is executed once in each execution rotation

Example

Executor rotates once to the left: execute facing ^1 ^ ^ run tp ~ ~ ~

All entities move one block in the direction of (0, 64, 0) (without changing their rotation): execute as @e at @s facing 0 64 0 run tp @s ^ ^ ^1

All entities move one block in the direction of (0, 64, 0) (with changing their rotation): execute as @e at @s facing 0 64 0 run tp ^ ^ ^1 ~ ~

All non player entities move one space in the direction of their nearest player (without changing their rotation): execute as @e[type=!player] at @s facing entity @p feet run tp @s ^ ^ ^1

in

Sets the execution dimension and position

It respects dimension scaling for relative and local coordinates: the execution position (only the X/Z part) is divided by 8 when changing from the Overworld to the Nether, and is multiplied by 8 when vice versa. Applies to custom dimensions as well.

Syntax

in <dimension> -> execute

Arguments

<dimension>: dimension

Name of the new execution dimension

Must be the resource location of a dimension. The standard dimensions in the minecraft namespace are "overworld", "the_nether", and "the_end".

Result

Execution dimension is updated

Unparseable if the argument is not specified correctly

Example

Looking for an end city (from the overworld): execute in the_end run locate EndCity

If a player at position (16,64,16) in Overworld runs command execute in minecraft:the_nether positioned as @s run tp ~ ~ ~, the player is teleported to (16,64,16) in the Nether.

If a player at position (16,64,16) in Overworld runs command execute in minecraft:the_nether run tp ~ ~ ~, the player is teleported to (2,64,2) in the Nether.

If a player at position (80,64,80) in Overworld runs command execute in minecraft:the_nether run tp ~ ~ ~5, the player is teleported to (10,64,15) in the Nether.

positioned

Sets the execution position , without changing execution rotation or dimension; can match an entity's position

Syntax

positioned <pos> -> execute

positioned as <targets> -> execute

Arguments

Option: positioned <pos>

<pos>: vec3

New position

Must be a three-dimensional coordinates with floating-point number elements. Accepts tilde and caret notations.

Option: positioned as <targets>

<targets>: entity

Target entity/entities to match position with

Must be a player name, a target selector or a UUID.

Result

Execution position is updated. And positioned <pos> changes execution anchor to feet.

Unparseable if the argument is not specified correctly.

Terminates if <targets> fails to resolve to one or more valid entities (named players must be online).

When multiple entities are selected, next sub-command is executed once in each execution position.

Examples

Look for a village near (0, 64, 0)

execute positioned 0 64 0 run locate village

rotated

Sets the execution rotation; can match an entity's rotation

Syntax

rotated <rot> -> execute

rotated as <targets> -> execute

Arguments

<rot>: rotation (<yaw> <pitch>)

Must be a rotation with double number elements, including yaw and pitch, measured in degrees.

• For the horizontal rotation (yaw), -180.0 for due north, -90.0 for due east, 0.0 for due south, 90.0 for due west, to 179.9 for just west of due north, before wrapping back around to -180.0.
• For the vertical rotation (pitch), -90.0 for straight up to 90.0 for straight down.

Tilde notation can be used to specify a rotation relative to the executor's rotation.

<targets>: entity

Target entity/entities to match rotation with

Must be a player name, a target selector or a UUID.

Result

Unparseable if the argument is not specified correctly

Terminates if <targets> fails to resolve to one or more valid entities (named players must be online).

When multiple entities are selected, next sub-command is executed once in each execution rotation.

Example

Move every sheep 1 block in the direction that the player closest to it is facing: execute as @e[type=sheep] at @sORpositioned as @s rotated as @p run tp @s ^ ^ ^1

Condition subcommands

The particular use of the if and unless subcommands are to restrict command execution to happen only under specified conditions. In most cases, unless is a negation of if, equivalent to "if not...". The two commands have identical argument structures.

Result of condition subcommands

Unparseable if the argument is not specified correctly.

In some cases, for example, testing a block outside the world, both if and unless terminates or fails.

When not at the end of the subcommands chain, only if the condition tests pass is the subcommand following it executed; otherwise it terminates. If it is executed multiple times by multiple variables (e.g. executors, execution positions, execution rotations), it acts as a variable filter - Only the variable that matches the condition executes the next subcommand.

When at the end of the subcommands chain, it checks whether the condition is met and then outputs.

There are six different types of conditions:

1. (if|unless) block – Tests a single real block
2. (if|unless) blocks – Tests a real 3D rectangular volume against another
3. (if|unless) data – Tests the data held by a real block, entity, or a storage
4. (if|unless) entity – Tests whether an entity like the one given is real
5. (if|unless) predicate – Tests a predicate
6. (if|unless) score - Tests a target's score

(if|unless) block

Compares the block at a given position to a given block ID or block tag.

Syntax

(if|unless) block <pos> <block> -> [execute]

Arguments

<pos>: block_pos

Position of a target block to test

It must be a block position composed of <x>, <y> and <z>, each of which must be an integer or a tilde and caret notation.

<block>: block_predicate

A valid block ID or block tag to test for

It must be in form of block_id[block_states]{data_tags}(accepts block tags), in which block states and data tags can be omitted when they are not needed.

Result

Unparseable if the argument is not specified correctly

In following conditions, terminates when this subcommand is not at the end of the subcommands chain; fails when at the end:

• If <pos> is unloaded or out of the world.
• If test doesn't pass.

When at the end of the subcommands chain, and the command is successful, success value and result value is 1.

(if|unless) blocks

Compares the blocks in two equally sized volumes

Syntax

(if|unless) blocks <start> <end> <destination> <scan mode> -> [execute]

Arguments

<start>: block_pos

<end>: block_pos

Positions of any two diagonal corners of the source volume (the comparand; the volume to compare)

It must be a block position composed of <x>, <y> and <z>, each of which must be an integer or a tilde and caret notation.

<destination>: block_pos

Position of the lower northwest corner of the destination volume (the comparator; the volume to compare to)

Assumed to be of the same size as the source volume

It must be a block position composed of <x>, <y> and <z>, each of which must be an integer or a tilde and caret notation.

<scan mode> : literal (all|masked)

Specifies whether all blocks in the source volume should be compared, or if air blocks should be masked/ignored

Result

Unparseable if the argument is not specified correctly

In following conditions, terminates when this subcommand is not at end of the subcommands chain; fails when at the end:

• If <start>, <end>, or <destination> is unloaded or out of the world.
• If the volume of the source region is greater than 32768 (the equivalent of 8 chunk sections)‌
• If test doesn't pass.

When at the end of the subcommands chain, and the command is successful, success value is 1.

For if mode, result value is the number of matching blocks (the total number of blocks in all mode, or the number of source region non-air blocks in masked mode).

For unless mode, result value is 1.

(if|unless) data

Checks whether the targeted block, entity or storage has any data tag for a given path

Syntax

(if|unless) data block <pos> <path> -> [execute] – for data checking a block

(if|unless) data entity <target> <path> -> [execute] – for data checking an entity

(if|unless) data storage <source> <path> -> [execute] – for data checking a storage

Arguments

Option: (if|unless) data block <pos> <path>

<pos>: block_pos

Position of the block whose data will be tested.

It must be a block position composed of <x>, <y> and <z>, each of which must be an integer or a tilde and caret notation.

<path>: nbt_path

Data path to check whether the block has.

Must be an NBT path.

Option: (if|unless) data entity <target> <path>

<target>: entity

A single entity whose data will be tested.

Must be a player name, a target selector or a UUID.

<path>: nbt_path

Data path to check whether the entity has.

Must be an NBT path.

Option: (if|unless) data storage <source> <path>

<source>: resource_location

The resource location of the storage whose data will be tested.

Must be a resource location.

<path>: nbt_path

Data path to check whether the storage has.

Must be an NBT path.

Result

Unparseable if the argument is not specified correctly

In following conditions, terminates when this subcommand is not at the end of the subcommands chain; fails when at the end:

• If <pos> is unloaded or out of the world.
• If block at <pos> isn't a block entity.
• If target fails to resolve to one valid entities (named players must be online)
• If test doesn't pass.

When at the end of the subcommands chain, and the command is successful, success value is 1.

For if mode, result value is the number of matching data tags.

For unless mode, result value is 1.

(if|unless) entity

Checks whether one or more entities exist.

Syntax

(if|unless) entity <targets> -> [execute]

Arguments

<entities>: entity

The target entity/ies to check

Must be a player name, a target selector or a UUID.

Result

Unparseable if the argument is not specified correctly

If test doesn't pass, terminates when this subcommand is not at the end of the subcommands chain; fails when at the end.

When at the end of the subcommands chain, and the command is successful, success value is 1.

For if mode, result value is the number of matching entities.

For unless mode, result value is 1.

(if|unless) predicate

Checks whether the predicate evaluates to a positive result. See Predicate for more information.

Syntax

(if|unless) predicate <predicate> -> [execute]

Arguments

<predicate>: resource_location

The predicate to be checked whether its evaluates to a positive result.

Must be a resource location.

Result

Unparseable if the argument is not specified correctly

In following conditions, terminates when this subcommand is not at the end of the subcommands chain; fails when at the end:

• If the predicate doesn't exist.
• If test doesn't pass.

When at the end of the subcommands chain, and the command is successful, success and result value is 1.

(if|unless) score

Check whether a score has the specific relation to another score, or whether it is in a given range.

Syntax

(if|unless) score <target> <targetObjective> (<|<=|=|>=|>) <source> <sourceObjective> -> [execute] – for comparing two scores

(if|unless) score <target> <targetObjective> matches <range> -> [execute] – for comparing one score against a range

Arguments

<target>: score_holder

A single score holder.

Must be a selection of score holders. It may be either a target selector, a player name, a UUID, or * for all score holders tracked by the scoreboard. Named player needn't be online, and it even needn't be a real player's name.

<targetObjective>: objective

The scoreboard objective to check under. The score of <target> in this objective will be checked.

It must be an valid scoreboard objective name.

Option: (<|<=|=|>=|>) <source> <sourceObjective>

<source>: score_holder

A single score holder to compare against

Must be a selection of score holders. It may be either a target selector, a player name, a UUID, or * for all score holders tracked by the scoreboard. Named player needn't be online, and it even needn't be a real player's name.

<sourceObjective>: objective

A scoreboard objective. The score of <source> in this objective will be checked.

It must be an valid scoreboard objective name.

Option: matches <range>

<range>: int_range

Range to compare score against

Must be a range acceptable for integer values. (e.g. 0 - exact match of 0. ..0 - less than or equal to 0. 0.. - more than or equal to 0. 0..1 - between 0 and 1, inclusive.)

Result

Unparseable if the argument is not specified correctly

In following conditions, terminates when this subcommand is not at the end of the subcommands chain; fails when at the end:

• If target or source is *.
• If test doesn't pass.

When at the end of the subcommands chain, and the command is successful, success and result value is 1.

Example

Kill all players standing on a wool: execute as @a at @s if block ~ ~-1 ~ #wool run kill @s

Check whether your own scores A and B are equal: execute if score @s A = @s B

Store subcommand

Store the final command's result or success value somewhere. It is first processed along with other subcommands, recording the location to store in. After the last subcommand (may be a condition subcommand or a run subcommand) is executed, return values will be stored in the location. Note that the return values of commands must be an integer. If a decimal, it is rounded down.

There are five different modes of storage:

1. store (result|success) block – Store return value under one of a block's NBTs
2. store (result|success) bossbar – Store return value as a bossbar data
3. store (result|success) entity – Store return value under one of an entity's NBTs
4. store (result|success) score – Store return value under a target's score on an objective
5. store (result|success) storage – Store return value under one of a storage's NBTs

store (result|success) block

Saves the final command's return value as tag data within a block entity. Store as a byte, short, int, long, float, or double. If the return value is a decimal, it is rounded first and then multiplied by <scale>.

Syntax

store (result|success) block <targetPos> <path> <type> <scale> -> execute

Arguments

<targetPos>: block_pos

Position of target block

<path>: nbt_path

Location of the desired tag to hold the value in

<type> : literal (byte|short|int|long|float|double)

Desired data size/type

<scale>: double

Multiplier to apply before storing value

Result

Unparseable if the argument is not specified correctly.

Does not store anything when the path does not exist.

store (result|success) bossbar

Saves the final command's return value in either a bossbar's current value or its maximum value

Syntax

store (result|success) bossbar <id> (value|max) -> execute

Arguments

<id>: resource_location

ID of the bossbar to target for saving

<value> : literal (value|max)

Whether to overwrite the bossbar's current value or its max value

Result

Unparseable if the argument is not specified correctly.

store (result|success) entity

Save the final command's return value in one of an entity's data tags. Store as a byte, short, int, long, float, or double. If the return value is a decimal, it is rounded first and then multiplied by <scale>. Like the "/data" command, "/execute store <arguments>" cannot modify player NBT.

Syntax

store (result|success) entity <target> <path> <type> <scale> -> execute

Arguments

<target>: entity

A single entity to store under

<path>: nbt_path

Location of the desired tag to hold the value in

<type> : literal (byte|short|int|long|float|double)

Desired data size/type

<scale>: double

Multiplier to apply before storing value

Result

Unparseable if the argument is not specified correctly.

Does not store anything when the path does not exist.

store (result|success) score

Overrides the score held by <targets> on the given <objective> with the final command's return value.

Syntax

store (result|success) score <targets> <objective> -> execute

Arguments

<targets>: score_holder

Specifies score holder(s) whose score is to be overridden

<objective>: objective

A scoreboard objective

Result

Unparseable if the argument is not specified correctly.

store (result|success) storage

Uses the <path> within storage <target> to store the return value in. Store as a byte, short, int, long, float, or double. If the return value is a decimal, it is rounded first and then multiplied by <scale>. If the storage does not yet exist, it gets created.

Syntax

store (result|success) storage <target> <path> <type> <scale> -> execute

Arguments

<target>: resource_location (Single word)

Target storage container, as a resource location

<path>: nbt_path

Location of the desired tag to hold the value in

<type> : literal (byte|short|int|long|float|double)

Desired data type/size

<scale>: double

Multiplier to apply before storing value

Result

Unparseable if the argument is not specified correctly

Run subcommand

The run command's single argument is the command to be executed, the variables of which may be modified by the subcommands used.

Syntax

run --><command>

Arguments

<command>

Can be any command

Technical

Resets the command node to the root of the command dispatcher

Information on modelling commands as chat text:

• The command dispatcher is what starts when the player begins a message with a forward-slash (/).
• A command node is the specific word/entry the cursor is editing, either a command or an argument.
• The root node comes before the first word in the current command.

Result

Execute this command. Fails if <command> is failure.

More examples

• Teleport all players who have an item enchanted with Efficiency in their first hotbar slot to coordinates (0, 64, 0):

  /execute as @a if data entity @s Inventory[{Slot:0b}].tag.Enchantments[{id:"minecraft:efficiency"}] run tp @s 0 64 0

• Create a smoke particle three blocks in front of all players:

  /execute as @a at @s anchored eyes run particle smoke ^ ^ ^3

• Place a saddle on pigs located within 5 blocks of the executing player, and remove saddles from pigs located over 5 blocks away from the executing player:

  /execute as @e[type=pig] at @s store success entity @s Saddle byte 1 if entity @p[distance=..5]

• Make a player say "My feet are soaked!" in chat if they are located in a block of water:

  /execute as @a at @s if block ~ ~ ~ water run say "My feet are soaked!"

• Make a player say "Score is reset" in chat if the score 'test' is not set, eg by doing "scoreboard players reset @s test":

  /execute as @a unless score @s test = @s test run say "Score is reset"

• Hurl all pigs skyward who are within 3 blocks of the nearest player:

  /execute at @p as @e[type=pig,distance=..3] run data merge entity @s {Motion:[0.0,2.0,0.0]}

• Kill all zombies who have no headgear:

  /execute as @e[type=zombie] unless data entity @s ArmorItems[3].id run kill @s

Bedrock Edition

Syntax

execute <origin: target> <position: x y z> <command: command>

An alternate syntax allows the command to be executed only if a specific block is detected:

execute <origin: target> <position: x y z> detect <detectPos: x y z> <block: Block> <data: int> <command: command>

Arguments

origin: target

Specifies the target to be the command's executor. Must be a player name or target selector. If more than one entity is selected, the command is run once as each of them.

position: x y z

Specifies the position from which to run the command. Coordinates specified with tilde and caret notation are relative to the target, not to the position of the command's execution.

command: command

Specifies the command to be run. Must be a valid command.

detectPos: x y z

Specifies the position of the block to check. May use tilde and caret notation to specify distances relative to position: x y z.

block: Block

Specifies the block ID that the block at detectPos, must match for the command to run. Must be a valid block ID.

data: int

Must be a valid block data for that type of block or -1 to match any block data.

Result

Fails if arguments are not specified correctly, if origin: target fails to resolve to one or more valid entities (named players must be online), if the checked block is not of the correct block id, data or state, or if the specified command fails.

On success, executes the specified command as if executed by the specified target(s), done with operator-level permission at the specified coordinate.

Examples

• To summon lightning bolts at the positions of every zombie:

  execute @e[type=zombie] ~ ~ ~ summon lightning_bolt

• To summon lightning bolts at the positions of every zombie standing on any type of sand:

  execute as @e[type=zombie] at @s if block ~ ~-1 ~ minecraft:sand run summon lightning_bolt

• To summon 10 creepers at the nearest player's position (only works as long as there are at least 10 entities in the loaded world):

  execute @e[c=10] ~ ~ ~ execute @p ~ ~ ~ summon creeper ~ ~ ~

• To summon ender dragon at the position of another player:

  execute @a[name=name_of_player] ~ ~ ~ summon ender_dragon

History

Java Edition
1.8		14w07a			Added /execute.
		14w08a			Commands run using /execute now pass their success value back to the command block running them.
1.11		16w32a			Added block state support to /execute.
1.13		17w45a			The syntax of /execute has been split off.
		17w45b			Reworked /execute store (result|success).
		18w02a			Added new subcommands to /execute to allow for more control over commands.
		18w05a			Added /execute store (result|success).
1.14		18w43a			Added /execute (if|unless) data.
1.15		19w38a			Added /execute if predicate <predicate>.
					Added /execute store storage.
Pocket Edition Alpha
v0.16.0		build 1			Added /execute.
					Functionality almost is equivalent to Java Edition 1.10 usage, except the entity target is optional in /execute.

Commands

View at: Template:Commands/content [edit]