## rewinddir ## 重设读取目录的位置为开头位置 ### 相关函数 ### open，opendir，closedir，telldir，seekdir，readdir，scandir ### 表头文件 ### ``` #include<sys/types.h> #include<dirent.h> ``` ### 定义函数 ### ``` void rewinddir(DIR *dir); ``` ### 函数说明 ### rewinddir()用来设置参数dir 目录流目前的读取位置为原来开头的读取位置。 ### 错误代码 ### EBADF dir为无效的目录流 ### 范例 ### ``` #include<sys/types.h> #include<dirent.h> #include<unistd.h> main() { DIR * dir; struct dirent *ptr; dir = opendir(“/etc/rc.d”); while((ptr = readdir(dir))!=NULL) { printf(“d_name :%s\n”,ptr->d_name); } rewinddir(dir); printf(“readdir again!\n”); while((ptr = readdir(dir))!=NULL) { printf(“d_name: %s\n”,ptr->d_name); } closedir(dir); } ``` ### 执行 ### ``` d_name:. d_name:.. d_name:init.d d_name:rc0.d d_name:rc1.d d_name:rc2.d d_name:rc3.d d_name:rc4.d d_name:rc5.d d_name:rc6.d d_name:rc d_name:rc.local d_name:rc.sysinit readdir again! d_name:. d_name:.. d_name:init.d d_name:rc0.d d_name:rc1.d d_name:rc2.d d_name:rc3.d d_name:rc4.d d_name:rc5.d d_name:rc6.d d_name:rc d_name:rc.local d_name:rc.sysinit ```