#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

int main()
{ char ignore1[1000];
  int p, link1[2], ignore2, total = 0;

  pipe(link1);
  p = fork();
  if (p == 0)
  { close(1);
    dup(link1[1]);
    execlp("ls", "ls", "-l", NULL);
    fprintf(stderr, "Can't execlp ls\n");
    exit(1); }

  close(link1[1]);
  FILE * fin = fdopen(link1[0], "r");
  fscanf(fin, "%s %d", ignore1, &ignore2);
  while (1)
  { char prot[20], owner[20], group[20], timeyr[20],
         month[10], day[10], name[100];
    int refcount, size;
    int n = fscanf(fin, "%s %d %s %s %d %s %s %s %s",
                        prot, &refcount, owner, group,
                        &size, month, day, timeyr, name);
    if (n <= 0)
      break;
    printf("%s has length %d\n", name, size);
    total += size; }
  printf("\ntotal size of all files = %d\n", total); }