SMARTS-10.1.x
To use similar query like findSystem in user interface, the equivalent command line option is to use findComputerSystem method.
This method takes IP address or System name as an argument.
Example:
Run below command from <BASEDIR>/IP/smarts/bin
dmctl -s <server-name> invoke ICIM_ObjectFactory::ICIM-ObjectFactory findComputerSystem "#.#.#.#"
dmctl -s <server-name> invoke ICIM_ObjectFactory::ICIM-ObjectFactory findComputerSystem "#####"