I need this rather old version for an experiment which likely doesn't work in newer versions.
Unfortunately, the /entitydata command was added in 1.8 (and the /data being even newer.
Is there any way to change an entity's data after it spawns?
1 Answer
If you don't mind using mods there is an in game NBT editor mod. Simply look at the entity (or tile entity like chests/spawners) and use the /nbtedit command. It brings up a nice little GUI for you to work with and multiple save states for NBT data if you need to paste them. You can also edit yourself with /nbtedit me.
Warning: this mod can and will corrupt things if you don't know what you're doing! Make a backup of your world if it's even remotely important!
Alternate github link for 1.7.10
2
