+ errno = 0;
+ id = strtol(argv[1], &name, 10);
+ if (id == 0 && errno == 0) {
+ ret = del_output(UINT32_MAX, name);
+ } else if (errno == 0 && *name == '\0') {
+ ret = del_output(id, NULL);
+ } else {
+ ERR("Argument %s not recognized", argv[1]);
+ ret = -1;
+ goto end;
+ }