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linux C ¶ÁȡĿ¼Îļþ²¢Í³¼ÆÎļþÊý

#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#define MAX 1024
int get_file_count(char *root)
{
 DIR *dir;
 struct dirent * ptr;
 int total = 0;
 char path[MAX];
 dir = opendir(root); /* ´ò¿ªÄ¿Â¼*/
 if(dir == NULL)
 {
  perror("fail to open dir");
  exit(1);
 }
 errno = 0;
 while((ptr = readdir(dir)) != NULL)
 {
  //˳Ðò¶Áȡÿһ¸öĿ¼Ï
  //Ìø¹ý“..”ºÍ“.”Á½¸öĿ¼
  if(strcmp(ptr->d_name,".") == 0 || strcmp(ptr->d_name,"..") == 0)
  {
   continue;
  }
  //printf("%s%s\n",root,ptr->d_name);
  //Èç¹ûÊÇĿ¼£¬ÔòµÝ¹éµ÷Óà get_file_countº¯Êý
  
  if(ptr->d_type == DT_DIR)
  {
   sprintf(path,"%s%s/",root,ptr->d_name);
   //printf("%s\n",path);
   total += get_file_count(path);
  }
  
  if(ptr->d_type == DT_REG)
  {
   total++;
   printf("%s%s\n",root,ptr->d_name);
  }
 }
 if(errno != 0)
 {
  printf("fail to read dir");  //ʧ°ÜÔòÊä³öÌáʾÐÅÏ¢
  exit(1);
 }
 closedir(dir);
 return total;
}
int main(int argc, char * argv[])
{
 int total;
 if(argc != 2)
 {
  printf("wrong usage\n");
  exit(1);
 }
 total = get_file_count(argv[1]);
 printf("%s ha %d files\n",argv[1],total);
 return 0;
}


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02 run_init_process(execute_command);
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