In addition to the Client GUI, PowerShell Moddule and .NET API, JAMS also offers a legacy command line tool for managing JAMS. Upon installation of JAMS, there is a JAMS.exe tool installed in the default Client directory. Upon launching the executable a JAMS> prompt will be displayed.
Entering HELP can show each of the Commands, with additional information expanded by entering HELP COPY for example.
SET SERVER JAMSServerName will allow you to set your JAMS Server for the tool to interface with.