Cygwin is a Linux-like environment for Windows. It consists of two parts: A DLL (cygwin1.dll) which acts as a Linux API emulation layer providing substantial Linux API functionality, and a collection of tools, which provide a Linux look and feel.
Review the licensing terms before installing. PRIOR TO UPGRADING, please read the User Guide.
System Requirements: Windows Operating System.
Download Cygwin from the Provider's Website
Cygwin: User's Guide
Cygwin: Frequently Asked Questions
Cygwin: API Reference
Services access network shares.
The application prints international characters but only gray boxes appear.
Installation on a Terminal Server machine goes wrong.
Referenced from: Cygwin.com