163 lines
7.5 KiB
XML
163 lines
7.5 KiB
XML
<?xml version="1.0" encoding='UTF-8'?>
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<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
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<qandadiv id="faq.about">
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<title>About Cygwin</title>
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<!-- faq-what.xml -->
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<qandaentry id="faq.what.what">
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<question><para>What is it?</para></question>
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<answer>
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<para>The Cygwin tools are ports of the popular GNU development tools for
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Microsoft Windows. They run thanks to the Cygwin library which
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provides the POSIX system calls and environment these programs expect.
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</para>
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<para>With these tools installed, it is possible to write Windows console
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or GUI applications that make use of significant parts of the POSIX API.
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As a result, it is possible to easily port many Unix programs without the need
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for extensive changes to the source code. This includes configuring
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and building most of the available GNU software (including the packages
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included with the Cygwin development tools themselves) as well as lots
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of BSD tools and packages (including OpenSSH). Even if
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the development tools are of little to no use to you, you may have
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interest in the many standard POSIX utilities provided with the package.
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They can be used from one of the provided Unix shells like bash, tcsh or zsh,
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as well as from the standard Windows command shell if you have to for some
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sad reason.
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</para>
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</answer></qandaentry>
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<qandaentry id="faq.what.supported">
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<question><para>What versions of Windows are supported?</para></question>
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<answer>
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<para>Cygwin can be expected to run on all modern versions of Windows.
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This includes, as of the time of writing this, Windows XP SP3, Windows
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Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows
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Server 2012, Windows 8. The 32 bit version also runs in the WOW64 32 bit
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environment on released 64 bit versions of Windows
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(XP/2003/Vista/2008/7/2008 R2/8/2012).
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Since Cygwin is a community-supported free software project, patches to
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provide support for other versions would be thoughtfully considered.
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Paid support contracts or enhancements are available through Red Hat. For
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information about getting a Red Hat support contract, see
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<ulink url="http://cygwin.com/licensing.html" />.
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</para>
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<para>Keep in mind that Cygwin can only do as much as the underlying OS
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supports. Because of this, Cygwin will behave differently, and
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exhibit different limitations, on the various versions of Windows.
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</para>
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</answer></qandaentry>
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<qandaentry id="faq.what.where">
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<question><para>Where can I get it?</para></question>
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<answer>
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<para>The home page for the Cygwin project is <ulink url="http://cygwin.com/">http://cygwin.com/</ulink>.
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There you should find everything you need for Cygwin, including links
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for download and setup, a current list of mirror sites, a User's
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Guide, an API Reference, mailing lists and archives, and additional
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ported software.
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</para>
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<para>You can find documentation for the individual GNU tools typically
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as man pages or info pages as part of the Cygwin net distribution.
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Additionally you can get the latest docs at
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<ulink url="http://www.gnu.org/manual/" />. (You should read GNU manuals from a
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local mirror. Check <ulink url="http://www.gnu.org/server/list-mirrors.html" />
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for a list of them.)
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</para>
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</answer></qandaentry>
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<qandaentry id="faq.what.free">
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<question><para>Is it free software?</para></question>
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<answer>
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<para>Yes. Parts are GNU software (gcc, gas, ld, etc...), parts are covered
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by the standard X11 license, some of it is public domain, some of
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it was written by Red Hat (or the former Cygnus Solutions) and placed under
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the GPL. None of it is shareware. You don't have to pay anyone to use it
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but you should be sure to read the copyright section of the FAQ for more
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information on how the GNU General Public License may affect your use of
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these tools.
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</para>
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<para>In particular, if you intend to port a proprietary (non-GPL'd)
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application using Cygwin, you will need the proprietary-use license
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for the Cygwin library. This is available for purchase from Red Hat;
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please visit <ulink url="http://cygwin.com/licensing.html" /> for more
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information. All other questions should be sent to the public project
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mailing list cygwin@cygwin.com.
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</para>
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<para>Note that when we say "free" we mean freedom, not price. The goal of
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such freedom is that the people who use a given piece of software
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should be able to change it to fit their needs, learn from it, share
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it with their friends, etc. The Cygwin license allows you those
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freedoms, so it is free software.
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</para>
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</answer></qandaentry>
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<qandaentry id="faq.what.version">
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<question><para>What version of Cygwin <emphasis>is</emphasis> this, anyway?</para></question>
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<answer>
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<para>To find the version of the Cygwin DLL installed, you can use
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<filename>uname</filename> as on Linux or <filename>cygcheck</filename>. Refer to each command's
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<literal>--help</literal> output and the <ulink url='http://cygwin.com/cygwin-ug-net/'>Cygwin User's Guide</ulink> for more information.
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</para>
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<para>If you are looking for the version number for the whole Cygwin
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release, there is none. Each package in the Cygwin release has its own
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version. The packages in Cygwin are continually improving, thanks to
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the efforts of net volunteers who maintain the Cygwin binary ports.
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Each package has its own version numbers and its own release process.
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</para>
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<para>So, how do you get the most up-to-date version of Cygwin? Easy. Just
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download the Cygwin Setup program by following the instructions
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<ulink url='http://cygwin.com/install.html'>here</ulink>. The setup program will handle the task
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of updating the packages on your system to the latest version. For
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more information about using Cygwin's <filename>setup.exe</filename>, see
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<ulink url='http://cygwin.com/cygwin-ug-net/setup-net.html'>Setting Up Cygwin</ulink>
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in the Cygwin User's Guide.
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</para></answer></qandaentry>
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<qandaentry id="faq.what.who">
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<question><para>Who's behind the project?</para></question>
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<answer>
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<para><emphasis role='bold'>(Please note that if you have cygwin-specific
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questions, all of these people will appreciate it if you use the cygwin
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mailing lists rather than sending personal email.)</emphasis>
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</para>
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<para>
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Christopher Faylor (cgf) is one of the project leads. Chris works for
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Netapp but all of his Cygwin activities occur on his own time. He is
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most notably responsible for the support of signal handling and
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fork/exec in Cygwin. He also administers the site which hosts the
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Cygwin project.
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</para>
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<para>
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Corinna Vinschen (corinna) is the other project lead. Corinna is a
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senior Red Hat engineer. Corinna is responsible for such important
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subsystems as security and networking and has recently added support to
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Cygwin for wide characters, increased path length, IPv6, advisory
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file locking and more.
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</para>
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<para>
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Yaakov Selkowitz is the Cygwin/X coordinator. Jon Turney serves on the
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Cygwin/X team as a developer.
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</para>
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<para>
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The Cygwin setup project is currently maintained by a group of people, most notably, Brian Dessent (brian) and Dave Korn (dave.korn).
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</para>
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<para>Please note that all of us working on Cygwin try to
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be as responsive as possible and deal with patches and questions as we
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get them, but realistically we don't have time to answer all of the
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email that is sent to the main mailing list. Making Net releases of the
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Win32 tools and helping people on the Net out is not our primary job
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function, so some email will have to go unanswered.
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</para>
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<para>Many thanks to everyone using the tools for their many contributions in
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the form of advice, bug reports, and code fixes. Keep them coming!
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</para></answer></qandaentry>
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</qandadiv>
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