if (nodemap_name == NULL || param == NULL || value == NULL) {
fprintf(stderr, "usage: nodemap_modify --name <nodemap_name> "
"--property <property_name> --value <value>\n");
if (nodemap_name == NULL || param == NULL || value == NULL) {
fprintf(stderr, "usage: nodemap_modify --name <nodemap_name> "
"--property <property_name> --value <value>\n");