#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#define TRUE 0
()
{
FILE *fp;
system("rmdir ./www.cs.rmit.edu.");
char chk[1];
strcpy(chk,"n");
  while(1)
  {
       
   	system("wget -p http://www.cs.rmit.edu./students/");
		
		system("md5sum ./www.cs.rmit.edu./images/*.* > ./www.cs.rmit.edu./text1.txt");
		
		
		if (strcmp(chk,"n")==0)		
		{		
		system("mv ./www.cs.rmit.edu./text1.txt   ./text2.txt");
		system("mkdir ./");
		
		system("mv ./www.cs.rmit.edu./students/index.html ./");
		}
		else
		{
		
		
		system(" diff ./www.cs.rmit.edu./students/index.html .//index.html | mail @cs.rmit.edu. ");
		system(" diff ./www.cs.rmit.edu./text1.txt ./text2.txt | mail @cs.rmit.edu. ");
		system("mv ./www.cs.rmit.edu./students/index.html ./");
		system("mv ./www.cs.rmit.edu./text1.txt   ./text2.txt");				
		}
		sleep(86400);
		strcpy(chk,"y");
		
	}
}		    	      
      
      

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


int ()
{
	
	FILE* fpp;										
	FILE* fp;
			
	char s[100];
	int i;
	
	while(1)										
	{
		system("wget -nv http://www.cs.rmit.edu./students");				
		
		i=0;		
		
		fp = fopen("dummyindex.txt","r");
		
		if(fp == (FILE*) NULL)								
		{
			printf(" is  previously saved webpage in the file\n");
			i=1;
			fp = fopen("dummyindex.txt","w");

		}
				
		fclose(fp);
		
				
		
		
		
		system("diff index.html dummyindex.txt > compareoutput.txt");		

				
		if(fpp != (FILE*) NULL)	
		{
			
			fpp = fopen("compareoutput.txt","r");					
			
			fgets(s,100,fpp);							
			
			fclose(fpp);								
		
		
		   
			if((strlen(s)>0) && i==0)								
			{
				system("mail @cs.rmit.edu. < compareoutput.txt");	
				system("cp index.html dummyindex.txt");				
				printf("Message has been sent\n");				
			}
			else
				printf(" is  change in the \n");			
		}
		
		

		system("rm index.html")	;				
		
		sleep(86400);									
	}
				
	return 1;
}
