Commands/publish

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This feature is exclusive to Java Edition.
publish
Restrictions

Operator
No command blocks

First introduced

Java Edition 1.3.1 (12w24a)

Opens singleplayer world to the local network.

Syntax
publish [port]
Description
Opens your singleplayer game for LAN friends to join. This command appears in the singleplayer cheats.
Port is the port to host on, between 0 and 65535. If not specified, a random port is chosen.
Success Conditions
Cannot be used in a command block.
Cannot be used on a multiplayer server, and will fail if the world is already published to LAN.
Will fail if the port could not be bound (e.g. a reserved port, or already in use by another application).

History[edit]

Java Edition
1.3.112w24aAdded /publish.
1.1317w45a/publish now accepts an optional port argument.