perform list command given command line implement just list command possibl param list command list string perform command intern list list command list po command index command command argument po command command command argument command command substr po command argument command substr po perform command command except println command command creat object object instanc instanti except println command instanti skip instanti except illeg access except println command instanti skip illeg access except command line println command command skip command line clio command line println perform command command command argument command argument result clio command command argument result println error execut command command command argument command argument println abort rest command 