here are some of the useful build in command line options in UVM.
instance specific factory override : +uvm_set_inst_override
type specific factory override : +uvm_set_type_override
integer configuration : +uvm_set_config_int
string configuration : +uvm_set_config_string
Timeout : +UVM_TIMEOUT
Max quit count : +UVM_MAX_QUIT_COUNT
Objection trace : +UVM_OBJECTION_TRACE
These command line options helps in quick debug and test writing.