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INTRO(3)			    Cygwin			      INTRO(3)

NAME
       intro - Introduction to the Cygwin API

DESCRIPTION
       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.  This page describes the API  pro‐
       vided by the DLL.

       A collection of tools which provide Linux look and feel.	 This environ‐
       ment is described in the intro(1) man page.

AVAILABILITY
       Cygwin is developed by volunteers collaborating over the	 Internet.  It
       is  distributed	through the website http://cygwin.com. The website has
       extensive documentation, including FAQ, User's Guide,  and  API	Refer‐
       ence.  It should be considered the authoritative source of information.
       The source code, relased under the GNU General Public License,  Version
       2, is also availalbe from the website or one of the mirrors.

COMPATIBILITY
       Cygwin  policy is to attempt to adhere to POSIX/SUSv2 (Portable Operat‐
       ing System Interface for UNIX / The Single UNIX Specification,  Version
       2) where possible.

       SUSv2 is available online at:

       http://www.opengroup.org/onlinepubs/007908799/

       For  compatibility  information	about  specific functions, see the API
       Reference at:

       http://cygwin.com/cygwin-api/cygwin-api.html

       Where these standards are ambiguous, Cygwin tries to mimic Linux.  How‐
       ever,  Cygwin  uses newlib instead of glibc as its C Library, available
       at:

       http://sources.redhat.com/newlib/

       Keep in mind that there are many underlying  differences	 between  UNIX
       and  Win32  (for	 example, a case-insensitive file system), making com‐
       plete compatibility an ongoing challenge.

REPORTING BUGS
       If you find a bug in Cygwin, please read

       http://cygwin.com/bugs.html

       and follow the instructions for reporting found there.  If you are able
       to  track  down	the source of the bug and can provide a fix, there are
       instructions for contributing patches at:

       http://cygwin.com/contrib.html

COPYRIGHT
       Cygwin is Copyright (C) 1995-2010 Red Hat, Inc.

       Cygwin is Free software; for complete licensing information, refer to:

       http://cygwin.com/licensing.html

SEE ALSO
       intro(1)

				  April 2010			      INTRO(3)

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