247 lines
12 KiB
Plaintext
247 lines
12 KiB
Plaintext
<chapter id="setup-net"><title>Setting Up Cygwin</title>
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<sect1 id="internet-setup">
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<title>Internet Setup</title>
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<para>To install the Cygwin net release, go to <ulink
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url="http://cygwin.com/">http://cygwin.com/</ulink> and click on <ulink
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url="http://cygwin.com/setup.exe">"Install Cygwin Now!"</ulink>. This will
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download a GUI installer called <command>setup.exe</command> which can
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be run to download a complete cygwin installation via the internet.
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Follow the instructions on each screen to install Cygwin.
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</para>
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<para>
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The <command>setup.exe</command> installer is designed to be easy
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for new users to understand while remaining flexible for the
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experienced. The volunteer development team is constantly working
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on <command>setup.exe</command>; before requesting a new feature,
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check the wishlist in the <ulink url="http://sources.redhat.com/cgi-bin/cvsweb.cgi/setup/README?cvsroot=cygwin-apps&rev=2">CVS <literal>README</literal>
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</ulink>. It may already be present in the CVS version!
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</para>
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<para>
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Since the default value for each option is the logical choice for
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most installations, you can get a working minimal Cygwin environment
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installed by simply clicking the <literal>Next</literal> button
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at each page. The only exception to this is choosing a Cygwin mirror,
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which you can choose by experimenting with those listed at
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<ulink url="http://cygwin.com/mirrors.html">
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http://cygwin.com/mirrors.html
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</ulink>. For more details about each of page of the
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<command>setup.exe</command> installation, read on below.
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Please note that this guide assumes that you have a basic understanding
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of Unix (or a Unix-like OS). If you are new to Unix, you will also want
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to make use of <ulink url="http://www.google.com/search?q=new+to+unix">
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other resources</ulink>.
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</para>
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<sect2><title>Download Source</title>
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<para>
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Cygwin uses packages to manage installing various software. When
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the default <literal>Install from Internet</literal> option is chosen,
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<command>setup.exe</command> creates a local directory to store
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the packages before actually installing the contents.
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<literal>Download from Internet</literal> performs only the first
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part (storing the packages locally), while
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<literal>Install from Local Directory</literal> performs only the
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second (installing the contents of the packages).
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</para>
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<para>
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The <literal>Download from Internet</literal> option is mainly
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for creating a base Cygwin package tree on one computer for
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installation on several machines with
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<literal>Install from Local Directory</literal>; copy the
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entire local package tree to another machine with the directory
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tree intact. For example, you might create a <literal>C:\cache\</literal>
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directory and place <command>setup.exe</command> in it. Run
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<command>setup.exe</command> to <literal>Install from Internet</literal>
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or <literal>Download from Internet</literal>, then copy the whole
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<literal>C:\cache\</literal> to each machine and instead choose
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<literal>Install from Local Directory</literal>. Unfortunately
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<command>setup.exe</command> does not yet support unattended installs.
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</para>
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<para>
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Though this provides some basic mirroring functionality, if you
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are managing a wide Cygwin installation, to keep up to date we recommend
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using a mirroring tool such as <command>wget</command>. A helpful user on
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the Cygwin mailing list created a simple demonstration script to accomplish
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this; search the list for <command>mkcygwget</command> for ideas.
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</para>
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</sect2>
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<sect2><title>Selecting an Install Directory</title>
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<para>
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The <literal>Root Directory</literal> for Cygwin (default
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<literal>C:\cygwin</literal>) will become <literal>/</literal>
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within your Cygwin installation. You must have write access to
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the parent directory, and any ACLs on the parent directory will
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determine access to installed files.
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</para>
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<para>
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The <literal>Install For</literal> options of <literal>All Users</literal>
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or <literal>Just Me</literal> should always be left on the default
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<literal>All Users</literal>, unless you do not have write access to
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<literal>HKEY_LOCAL_MACHINE</literal> in the registry or the All Users
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Start Menu. This is true even if you are the only user planning to use Cygwin
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on the machine. Selecting <literal>Just Me</literal> will cause problems
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for programs such as <command>crond</command> and <command>sshd</command>.
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If you do not have the necessary permissions, but still want to use these
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programs, consult the Cygwin mailing list archives about others' experiences.
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</para>
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<para>
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The <literal>Default Text File Type</literal> should be left on
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<literal>Unix</literal> (that is, <literal>\n</literal>) unless you
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have a very good reason to switch it to
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<literal>DOS</literal> (that is, <literal>\r\n</literal>).
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</para>
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</sect2>
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<sect2><title>Local Package Directory</title>
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<para>
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The <literal>Local Package Directory</literal> is the cache where
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<command>setup.exe</command> stores the packages before they are
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installed. The cache must not be the same folder as the Cygwin
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root. Within the cache, a separate directory is created for each
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Cygwin mirror, which allows <command>setup.exe</command> to use
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multiple mirrors and custom packages. After installing Cygwin,
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the cache is no longer necessary, but you may want to retain the
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packages as backups, for installing Cygwin to another system,
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or in case you need to reinstall a package.
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</para>
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</sect2>
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<sect2><title>Connection Method</title>
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<para>
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The <literal>Direct Connection</literal> method of downloading will
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directly download the packages, while the IE5 method will leverage your
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IE5 cache for performance. If your organisation uses a proxy server or
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auto-configuration scripts, the IE5 method also uses these settings.
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If you have a proxy server, you can manually type it into
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the <literal>Use Proxy</literal> section. Unfortunately,
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<command>setup.exe</command> does not currently support password
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authorization for proxy servers.
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</para>
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</sect2>
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<sect2><title>Choosing Mirrors</title>
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<para>
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Since there is no way of knowing from where you will be downloading
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Cygwin, you need to choose at least one mirror site. Cygwin mirrors
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are geographically distributed around the world; check the list at <ulink
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url="http://cygwin.com/mirrors.html">http://cygwin.com/mirrors.html</ulink>
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to find one near you. You can select multiple mirrors by holding down
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<literal>CTRL</literal> and clicking on each one. If you have the URL of
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an unlisted mirror (for example, if your organization has an internal Cygwin
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mirror) you can add it.
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</para>
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</sect2>
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<sect2><title>Choosing Packages</title>
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<para>
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For each selected mirror site, <command>setup.exe</command> downloads a
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small text file called <literal>setup.bz2</literal> that contains a list
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of packages available from that site along with some basic information about
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each package which <command>setup.exe</command> parses and uses to create the
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chooser window. For details about the format of this file, see
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the <ulink url="http://sources.redhat.com/cygwin-apps/setup.html">
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setup.exe homepage</ulink>.
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</para>
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<para>
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The chooser is the most complex part of <command>setup.exe</command>.
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Packages are grouped into categories, and one package may belong to multiple
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categories (assigned by the volunteer package maintainer). Each package
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can be found under any of those categories in the heirarchial chooser view.
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By default <command>setup.exe</command>
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will install only the packages in the <literal>Base</literal> category
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and their dependencies, resulting in a minimal Cygwin installation.
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However, this will not include many commonly used tools such as
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<command>gcc</command> (which you will find in the <literal>Devel</literal>
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category). Since <command>setup.exe</command> automatically selects
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dependencies, be careful not to unselect any required packages. In
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particular, everything in the <literal>Base</literal> category is
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required.
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</para>
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<para>
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You can change <command>setup.exe</command>'s view style, which is helpful
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if you know the name of a package you want to install but not which
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category it is in.
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Click on the <literal>View</literal> button and it will rotate between
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<literal>Category</literal> (the default), <literal>Full</literal> (all
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packages), and <literal>Partial</literal> (only packages to be upgraded).
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If you are familiar with Unix, you will probably want to at least glance
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through the <literal>Full</literal> listing for your favorite tools.
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</para>
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<para>
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Once you have an existing Cygwin installation, the <command>setup.exe</command>
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chooser is also used to manage your Cygwin installation.
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Information on installed packages is kept in the
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<literal>/etc/setup/</literal> directory of your Cygwin installation; if
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<command>setup.exe</command> cannot find this directory it will act just like
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you had no Cygwin installation. If <command>setup.exe</command>
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finds a newer version of an installed package available, it will automatically
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mark it to be upgraded.
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To <literal>Uninstall</literal>, <literal>Reinstall</literal>, or get the
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<literal>Source</literal> for an existing package, click on
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<literal>Keep</literal> to toggle it.
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Also, to avoid the need to reboot after upgrading, make sure
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to close all Cygwin windows and stop all Cygwin processes before
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<command>setup.exe</command> begins to install the upgraded package.
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</para>
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<para>
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The final feature of the <command>setup.exe</command> chooser is for
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<literal>Previous</literal> and <literal>Experimental</literal> packages.
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By default the chooser shows only the current version of each package,
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though mirrors have at least one previous version and occasionally there
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is a testing or beta version of a package available. To see these package,
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click on the <literal>Prev</literal> or <literal>Exp</literal> radio button.
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Be warned, however, that the next time you run <command>setup.exe</command>
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it will try to replace old or experimental versions with the current
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stable version.
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</para>
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</sect2>
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<sect2><title>Download and Installation Progress</title>
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<para>
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First, <command>setup.exe</command> will download all selected packages
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to the local directory chosen earlier. Before installing,
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<command>setup.exe</command> performs a checksum on each package. If the
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local directory is a slow medium (such as a network drive) this can take
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a long time. During the download and installation, <command>setup.exe</command>
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show progress bars for the current task and total remaining disk space.
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</para>
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</sect2>
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<sect2><title>Icons</title>
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<para>
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You may choose to install shortcuts on the Desktop and/or Start Menu
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to start a <literal>bash</literal> shell. If you prefer to use a different
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shell or the native Windows version of <literal>rxvt</literal>, you can
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use these shortcuts as a guide to creating your own.
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</para>
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</sect2>
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<sect2><title>Post-Install Scripts</title>
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<para>
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Last of all, <command>setup.exe</command> will run any post-install
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scripts to finish correctly setting up installed packages. Since each
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script is run separately, several windows may pop up. If you are
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interested in what is being done, see the Cygwin Package Contributor's
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Guide at <ulink
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url="http://cygwin.com/setup.html">http://cygwin.com/setup.html</ulink>
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When the last post-install script is completed, <command>setup.exe</command>
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will display a box announcing the completion. A few packages, such as
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the OpenSSH server, require some manual site-specific configuration.
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Relevant documentation can be found in the <literal>/usr/doc/Cygwin/</literal>
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or <literal>/usr/share/doc/Cygwin/</literal> directory.
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</para>
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</sect2>
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</sect1>
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DOCTOOL-INSERT-setup-env
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DOCTOOL-INSERT-setup-maxmem
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DOCTOOL-INSERT-ntsec
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DOCTOOL-INSERT-setup-files
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</chapter>
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