/**********************************************************
// Author: Abdirahim Abdi
// Assignment: Lab 2
// Class: CSE 660 - Operating Systems
// Description: Operating System Commands
// File EE.cpp
**********************************************************/
#include <iostream>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
using namespace std;
/*************************************/
int main()
{
	mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH;
	bool readNotDone = true;
	char buffer[1];
	int readBuffer, reverseCount = 0;
	int fileID_XYZ = open("XYZ.txt", mode);
	lseek(fileID_XYZ, -1, 2);
	cout << "Process ID EE" << ": " << getpid() << "(CODE EE)" << " - This is what I read from XYZ: \n";
	while (readNotDone)
	{
		readBuffer = read(fileID_XYZ, &buffer, 1);
		cout << buffer;
		reverseCount++;
		if (reverseCount == 150)
		{
			readNotDone = false;
		}
		lseek(fileID_XYZ, -2, 1);
	}
	cout << "\n\n";
	unlink("XYZ.txt");
	cout << "Process ID EE" << ": " << getpid() << "(CODE EE)" << " - Deleting XYZ.txt and terminating.\n\n";
	exit(0);
}