struct option long_options[] = {
{"config", required_argument, 0, 'c'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},
struct option long_options[] = {
{"config", required_argument, 0, 'c'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},