In the following example, we will change the screen resolution in BackTrack 5.
We are running BackTrack as a guest in a VirtualBox 4.2 and we have installed the Guest Additions within BackTrack in order for this to work.
We will use the xrandr utility to list the current available screen resolutions and to do the change.

xrandr
xrandr [...]

In order for your VirtualBox guests to achieve better mouse pointer integration, shared folders, better video support, seamless windows, generic host/guest communication channels, time synchronization, shared clipboard and automated logons, you can install the Guest Additions for VirtualBox. The Guest Additions is a single ISO file and should be mounted and installed within the guest [...]

This is the procedure for building and installing a custom kernel with support for firewall, network address translation (NAT) and traffic shaping in FreeBSD 8.1. This process will also provide benefits, such as faster boot time, lower memory usage and additional hardware support.
If sources for the system is not installed, then run the system installer, [...]

A screencast is a digital recording of computer screen output, also known as a video screen capture or desktop recording, often containing audio narration. The term screencast compares with the related term screenshot. Whereas a screenshot is a picture of a computer screen, a screencast is essentially a movie of the changes over time, [...]

OpenSSH is a free version of the SSH connectivity tools, that technical users of internet and networks rely on. Users of telnet, rlogin and ftp may not be aware, that their password and data is transmitted unencrypted. OpenSSH encrypts data traffic, including passwords, to effectively eliminate eavesdropping, connection hijacking and other attacks. Additionally, OpenSSH provides [...]