omnidir /open p:\cdcmodels\udbtarget(production).rsm /catsync server=all writeto=p:\cdcoutput\udbtargetcat.out /log p:\cdcoutput\udbtargetdirlog.log
This command runs catalog synchronization for all the replication servers in the udbtarget(production) model, and writes the contents to udbtargetcat.out.