text: #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <assert.h>
  #include "fs.h"
  
  int main(int argc, char *argv[])
  {
    assert(sizeof(int) == 4); // 整數必須是 4 bytes
  
    if(argc < 2){
      fprintf(stderr, "Usage: mkfs fs.img files...\n");
      exit(1);
    }
  
    fs_open(argv[1]); 
    fs_init();
    fs_save();
    fs_build(argc-2, &argv[2]);
  }
  