#include<stdio.h>
#include<stdlib.h>
#include<strings.h>
#include<ctype.h>

int ()
{

 FILE *fp;
 char [100];
 int flag = 0;
 system("rm index.html*");
 system("wget http://www.cs.rmit.edu./students/");
 system("wget -p --convert-links http://www.cs.rmit.edu./students/");
 system("mv index.html index1.html");
 sleep(8640);
 system("wget http://www.cs.rmit.edu./students/");
 system("wget -p --convert-links http://www.cs.rmit.edu./students/");

 system("diff index1.html index.html > out.txt");

 fp = fopen("out.txt","r");

 if (fgets(,100,fp) != NULL)
 {

   flag = 1;
   printf("\nThere  changes in the website.Check your mail\n");
   system("mailx -s \"output of watchdog\"  < out.txt");

 }

  if(flag == 0 )
   printf("\n    changes in the website\n ");
 fclose(fp);
 exit(1);

 }















#include <sys/time.h>
#include <strings.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>


int main()
{

  system("wget -p --convert-links http://www.cs.rmit.edu./students/");
  system("mkdir home");
  system("mv www.cs.rmit.edu./images/*.*   home/");
  system("mv www.cs.rmit.edu./students/*.* home/");
  system("cd www.cs.rmit.edu./images");
  sleep(1);
  system("wget -p --convert-links http://www.cs.rmit.edu./students/");
  system("mkdir second");
  system("mv www.cs.rmit.edu./images/*.*  second/");
  system("mv www.cs.rmit.edu./students/*.* second/");
  system("cd www.cs.rmit.edu./images");
  system("diff home second > difference.txt");
  system("mailx -s   \"Difference in  \"    < difference.txt ");
  return 0;
}
