You searched for empty container
1. empty container
Syntax: empty <container1> <container2>
The empty command can be used to attempt to transfer the items from one
container into another. It is possible to fail getting items out if you
cannot carry the weight, and it is also possible to fail putting items into
the second container, if it cannot hold it, so you may end up with items in
your inventory after the emptying process is complete.