The Dunyazad Digital Library

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The content of this section of the website is not related to its main purpose of providing carefully edited e-books. I have moved these pages here from my former and now defunct IT services website

Once you are here, if you haven’t already done so, please also take a look at the books in the library, they are free!

> The Windows Command Line

A few command line programs or tools that I’ve written, and links to other tools and information about the Windows command line.

Hypatia Command Line Calculator

A powerful but (once you’ve got accustomed to it) fast and easy to use calculator.

Last updated: 03/08/2021

Please note: In versions prior to March 8, 2021 converting ft/m gave wrong results!


Lets you do things with all or some files in a directory.

Last updated: 09/24/2018


Lets you create a random string of characters for use as encryption key or password.

Last updated: 09/26/2018


Lets you create an empty file.

Last updated: 04/12/2018


Plays mp3 files from the command line.

Last updated: 05/12/2018

Console Windows

A suggestion for how you can open console windows that are configured to suit your needs.

Last updated: 04/18/2018

Command Line Links

Links to command line programs, resources and information.

Last updated: 07/2017

The Dunyazad tool for converting plain text to HTML, which can then be converted to various e-book formats.

Version 1.2, last updated: 01/16/2020

I do not commit myself to providing support, but if you have any questions or suggestions, please feel free to contact me at
Robert Schaechter


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