Entropy, as it relates to passwords, is a measure of how many attempts it will take during a search to exhaust all possibilities of your password. Pscalc is a utility to quickly let you calculate the entropy of a password given a few bits of information.

VirtualBox is an application for creating virtual machines. A virtual machine is a software based computer, running inside your own. They have various uses, but one is to have an isolated environment in which to test software. The graphical user interface of VirtualBox has long been inaccessible to the blind—leaving the command line as the only option. Having said that, this guide may also be of interest to others. If you are a system administrator, for example, you might use the information here to automate the task of maintaining the virtual machines your company uses. Technical manuals, such as the one for VBoxManage—the command line interface to VirtualBox—do not exactly make for scintillating reading, thus, this guide.

I’m a firm believer that reading is one of the great joys of life. From Science Fiction to biographies, there’s something for everyone. Whenever possible, I purchase books in the EPUB format. As Amazon’s Kindle doesn’t support that format, I need to convert them to a format the Kindle understands (MOBI usually), and then upload them to my device. This can be done by hand, but I wanted an automated way to do it.

IFTTT (If This Then That): http://www.ifttt.com/ is a service which can interact with hundreds of services and devices to take action on events.

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