Linux运行app带参数 getopt

头文件：#include <getopt.h>

main函数中：

int opt = 0;
int cmd = 0;
int data = 0;
const char *optstring = "a:b:c:hz";
//while ((opt = getopt_long(argc, argv, optstring)) != -1)
while ((opt = getopt(argc, argv, optstring)) != -1)
{
    case 'a': //analog voltage
      sscanf(optarg, "%d", &data);
      break;
    case 'b': //set bar
      sscanf(optarg, "%d", &data);
      break;
    case 'c': // do api func
      printf("opt is c, comand is: %s\n", optarg);
      if (!strcmp(optarg, "open"))
      {
        cmd = 1;
      }
      else if (!strcmp(optarg, "close"))
      {
        cmd = 2;
      }
      else
      {
        printf("[ERR] command NG: %s\n", optarg);
        return 0;
      }
      /*
      ret = do_api_func(cmd);
      if (0 != ret)
      {
        printf("[ERR] errcode=%d\n", ret);
        return 0;
      }
      else
      {
        ret = check_api_result_when_ok(cmd);
      }
      break;
      */
    case 'z': //dump parameters for debug
      //debug_dump_api_parameters();
      break;
    case 'h':
      print_usage(argv[0]);
      return 0;
    case '?':
      printf("Try \'%s -h\' for more information.\n", argv[0]);
      return 0;
}

如果想用长命令（–command）代替短命令（-c），使用转换：

struct option long_options[] = {
    {"cmd", 1, NULL, 'c'},
    {"analog-input", 1, NULL, 'a'},
    {"bar", 1, NULL, 'b'},
    {0, 0, 0, 0},
};