UnxUtils is a collection of linux most common command line utilities for Windows environment. It is for you, if you are in love with some of unix utilities, which do not have Microsoft analogue in Windows environment (or they have, you type the linnux name first), such as:
You could see the full list of commands here.
If you are command prompt fan, this collection is for you. In the official page of the project, but there is broken links.
A backup of it is located here.