fileops/listdir.c

   1 /* compile with:
   2    gcc listdir.c -o listdir -Wall -W -Wextra -ansi -pedantic */
   3
   4 #include <dirent.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7
   8 int main(int argc, char *argv[])
   9 {
  10     struct dirent *pdent;
  11     DIR *pdir;
  12
  13     /* check argument count */
  14     if (argc != 2) {
  15         fprintf(stderr, "Usage: %s directory\n", argv[0]);
  16         exit(EXIT_FAILURE);
  17     }
  18
  19     /* open directory named by argv[1], associate a directory stream
  20        with it and return a pointer to it
  21     */
  22     if ((pdir = opendir(argv[1])) == NULL) {
  23         perror("opendir");
  24         exit(EXIT_FAILURE);
  25     }
  26
  27     /* get all directory entries */
  28     while((pdent = readdir(pdir)) != NULL)
  29         printf("%s\n", pdent->d_name);
  30
  31     closedir(pdir);
  32     return EXIT_SUCCESS;
  33 }