Read the doc's. Recent versions all support it, but 1.23 is pretty old, at least early 2003. In fact I think since SSH2 support was added the module can support multi-commands. But you dont say how you want to use them or what you are doing. THe documentation from at least 1.24 has eben rather explicit about multiple commands per connection and how to use them, the comments on that are immedaitely followed by the section on the
method.