#include <lib9.h> voidmain(int argc, char **argv){	for(argv++; *argv; argv++){		if(access(*argv, 0) == 0){			fprint(2, "mkdir: %s already exists\n", *argv);			exits("exists");		}		if(mkdir(*argv) < 0){			fprint(2, "mkdir: can't create %s\n", *argv);			perror(0);			exits("error");		}	}	exits(0);}