Cygwin is a UNIX environment, developed by Cygnus, (now Red Hat), for Windows. It consists of two parts:
- A DLL (cygwin1.dll) which acts as a UNIX emulation layer providing substantial UNIX API functionality.
The Cygwin DLL works with all non-beta versions of Windows since Windows 95, with the exception of Windows CE.
- A collection of tools, ported from UNIX, which provide UNIX/Linux look and feel.
StephenH used cygwin to uuencode and transfer images onto the TuxScreen while InstallingLinux