Virtual Box

ORACLE VM VirtualBox

To extends the capabilities of your existing computer so that it can run multiple operating systems (inside multiple virtual machines) at the same time. So, for example, you can run Windows and Linux on your Mac, run Windows Server 2008 on your Linux server, run Linux on your Windows PC, and so on, all alongside your existing applications. You can install and run as many virtual machines as you like – the only practical

limits are disk space and memory.

Why is virtualization useful?

• Running multiple operating systems simultaneously.
• Easier software installations.
• Testing and disaster recovery.
• Infrastructure consolidation.    

Some Terminology

• Host operating system (host OS).
• Guest operating system (guest OS).
• Virtual machine (VM).
• Guest Additions.

Source

Relational Database Management System Concepts

Relational Database Management System from Free Open Source Software Technology Lab

Useful Sites for my beginners Students

Linux Flavors

Debian Based Operating System

Ubuntu

Linux Mint

KNOPPIX

RPM Based Operating System

RedHat

CentOS

Fedora

For All other Distributions

Distrowatch

For Open Source Softwares

Sourceforge.net

Turn Wifi Card into AP mode in Linux Mint

How to enable Wi-Fi Access point on Mint 17

We will make from our Linux Mint 17 machine to a Wi-Fi access point, for this we do not need any additional software, just easy as 1-2-3:

1. Go to Main Menu -> Preferences -> Network Connections
click on Add and choose Wi-Fi. Choose a network name (SSID), Infrastructure mode. Go to to Wi-Fi Security and choose a WPA/WPA2 Personal and create a password. Go to IPv4 settings and check that it is shared with other computers.

2. Do sudo gedit /etc/NetworkManager/system-connections/YOUR_CONNECTION_NAME and change mode=infrastructure to mode=ap and save it.

3. Click on Network Manager near clocks and choose connect to hidden wireless network --> choose your connection --> enjoy.

P.S. If it does not work, run iw list and check in Supported interface modes: * AP, if you do not have AP there, probably your Wi-Fi card does not support this mode.

Source