int main()
{
	char cmd[100];
	int num=1;
	int counter=1;
	int status;
	pid_t pid;	
 
	do
	  {
		cout<<"UOWUnix>";
		cin.getline(cmd,100);
 
		//strcmp will return o if the word quit is found in the system.		
		counter = strcmp(cmd, "QUIT");
 
		//when the counter is 0, quits the system.		
		if(counter==0)
		{
		  cout<<"Good bye"<<endl;
		}//end if
 
		//execute all the command here.		
		else
		{
			pid=fork();
 
			//tells the parent to wait here. How to get the status of the child!?!?			
			if(pid>0)
			{
				//wait((int *) 0)
				cout<<"in parent!!! child id is "<<pid<<endl;	
			}
			//This is the child. start to do the work here. For now can only do one command, ls only.
			else if(pid==0)
			{	
			execlp(cmd, cmd,(char *)0);
			exit(0);
			}	
		}		
	  }//end do
	while (counter !=0); 
}//end main