write

component = require("component")
io = require("io")
serialization = require("serialization")
file = io.open("file", "r")
nb = file:read()
nbt = serialization.unserialize(nb)
component.debug.getWorld().setTileNBT(math.floor(component.debug.getX()),math.floor(component.debug.getY()+1),math.floor(component.debug.getZ())+1, nbt)
file:close()