#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/time.h>



void emptyFile(char* name)
{
	FILE* myFile;
	myFile = fopen(name,"w");
	fclose(myFile);
}

int (void)
{
	FILE* myFile;
	char* myString;
	
	myString = malloc(sizeof(char ) * 100);

	
	
	emptyFile(".old.html");
	emptyFile(".new.html");

	
	system("wget -O .old.html -q http://www.cs.rmit.edu./students/");

	while(1)
	{
		
		emptyFile(".new.html");

		
		system("wget -O .new.html -q http://www.cs.rmit.edu./students/");
		
		
		system("diff .old.html .new.html > watch.txt");

		myFile = fopen("watch.txt","r");
		if(myFile != (FILE*) NULL)
		{
			fgets(myString,100,myFile);
			if(strlen(myString) > 0)
			{
				
				
				system("mail @cs.rmit.edu. < watch.txt");
				
				system("cp .new.html .old.html");
			}
		}
		
		sleep(60*60*24);
	}
	
	return 1;
}



         

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

    
    int main ()
    {
      FILE *fp;
      char s[300] , ptr[20]; 	     
	system("rm *.html* ");
      system("wget http://www.cs.rmit.edu./students/ ");    
	system("mv index.html First.html");
	system("sleep 10");
	system("wget http://www.cs.rmit.edu./students/ "); 
      system("diff First.html index.html > difference.txt" );
	fp=fopen("difference.txt","r");
      if(fgets(ptr,30,fp))
	     {
	     system( "mailx -s   \"Changes were detected \"    < difference.txt ");
           }
    else 
	      printf(" were  changes detected"); 
	     
            return 0;   
      

     }
      
      
   



