Start UltraCompare and configure the folder synchronization you need to run often. Select the folders to synchronize, select the synchronization rule, ...
Then click on Session - Session Properties
and enter a good name for this folder synchronization session. Press button OK
Next use Session - Save Active Session
to store that session for re-usage. You can see now the session on tab Sessions
on dockable view Explorer & Sessions
Now you can run from command line or Directory Opus uc.exe with parameter -prf
and the name of the session.
"C:\Program Files (x86)\IDM Computer Solutions\UltraCompare\uc.exe" -prf "Sync Folder X"
Sync Folder X
is the name of the saved session.
It is currently not possible to save a session without specifying the folder paths and specify or overload the stored folder paths with folder paths specified on command line. In other words to use a session just as template to define the mode and parameters, but not what should be compared/synchronized.
See my post on topic How to specify "column range" info for different types of files?
containing my feature request sent to IDM support on 2014-08-08. If you would like also such an enhancement, request same feature. The more users request a feature the higher becomes the priority for being implemented.