Lets you teleport units; syntax is: number after unit is unit id, number after x,y,z is related position number, showunitid will show unit under cursor's ID, showpos will show position under cursor. Just a unit or just a position can be supplied; if either is the case, the cursor will be used to determine what the remaining variable is.

teleport.lua

local function teleport(unit,pos)
    local unitoccupancy = dfhack.maps.getTileBlock(unit.pos).occupancy[unit.pos.x%16][unit.pos.y%16]
    unit.pos.x = pos.x
    unit.pos.y = pos.y
    unit.pos.z = pos.z
    if not unit.flags1.on_ground then unitoccupancy.unit = false else unitoccupancy.unit_grounded = false end
end

local function getArgsTogether(args)
    local settings={
    pos={}}
    for k,v in ipairs(args) do
        v=string.lower(v)
        if v=="unit" then settings.unitID=tonumber(args[k+1]) end
        if v=="x" then settings.pos['x']==tonumber(args[k+1]) end
        if v=="y" then settings.pos['y']==tonumber(args[k+1]) end
        if v=="z" then settings.pos['z']==tonumber(args[k+1]) end
        if v=="showunitid" then print(dfhack.gui.getSelectedUnit(true).id) end
        if v=="showpos" then printall(df.global.cursor) end
    end
    if not settings.pos.x or not settings.pos.y or not settings.pos.z then settings.pos=nil end
    if not settings.unitID and not settings.pos.x then qerror("Needs a position, a unit ID or both, but not neither!") end
    return settings
end

local args = {...}

local teleportSettings=getArgsTogether(args)

local unit = teleportSettings.unitID and df.unit.find(teleportSettings.unitID) or dfhack.gui.getSelectedUnit(true)

local pos = teleportSettings.pos and teleportSettings.pos or df.global.cursor

teleport(unit,pos)

The way to use it is as follows. On DFHack window type, with the cursor on the unit in Dwarf Forttress
teleport -showunitid
It will display the unit id number say it is 9955.
Now in Dwarf fortress move the cursor to a safe new position and now type in DFHack
teleport 9955
this should save your Drowning Dwarf :-)

I'd like to point out, playing in the most up to date version of the Lazy Noob Pack, I had to run

teleport -showunitid

and then

teleport -unit [result from -showunitid]

The documentation is not very useful and needs to be improved.

@draeath
You can't possibly be using this exact script, because this has several syntax errors that would make it unusable with any DFHack version (you wouldn't even get to the error you were seeing).

@Djent- there is somewhat-improved documentation at http://dfhack.readthedocs.io/en/latest/docs/_auto/base.html#teleport now.

If there continue to be issues with the teleport.lua script that's included in the most recent DFHack release (currently 0.43.03-r1), please open an issue at https://github.com/DFHack/dfhack. Thanks!

Also, you can find the current teleport script in the DFHack/scripts repo: https://github.com/DFHack/scripts/blob/master/teleport.lua (and you can suggest changes the documentation there).