286 lines
13 KiB
XML
286 lines
13 KiB
XML
<?xml version="1.0" encoding='UTF-8'?>
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<!DOCTYPE chapter 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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<chapter id="setup-net" xmlns:xi="http://www.w3.org/2001/XInclude">
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<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="https://cygwin.com/"/> and run either
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<ulink url="https://cygwin.com/setup-x86.exe">setup-x86.exe</ulink>
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to install the 32 bit version of Cygwin, or
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<ulink url="https://cygwin.com/setup-x86_64.exe">setup-x86_64.exe</ulink>
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to install the 64 bit version of Cygwin. This will download a GUI
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installer which can be run to download a complete cygwin installation
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via the internet. Follow the instructions on each screen to install Cygwin.
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</para>
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<para>
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<note>
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For easier reading the installer is called <command>setup.exe</command>
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throughout the following sections. This refers likewise to both
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installer applications,
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<ulink url="https://cygwin.com/setup-x86.exe">setup-x86.exe</ulink>
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for 32 bit, as well as
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<ulink url="https://cygwin.com/setup-x86_64.exe">setup-x86_64.exe</ulink>
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for 64 bit. Apart from the target architecture they are the same thing.
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</note>
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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
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<ulink url="https://sourceware.org/git/gitweb.cgi?p=cygwin-setup.git;a=blob_plain;f=README;hb=HEAD">Git <literal>README</literal>
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</ulink>. It may already be present in the Git version!
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</para>
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<para>
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On Windows Vista and later, <command>setup.exe</command> will check by
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default if it runs with administrative privileges and, if not, will try
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to elevate the process. If you want to avoid this behaviour and install
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under an unprivileged account just for your own usage, run
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<command>setup.exe</command> with the <literal>--no-admin</literal> option.
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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="https://cygwin.com/mirrors.html"/>. 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 id="setup-download"><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>.
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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 large 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 id="setup-dir"><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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</sect2>
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<sect2 id="setup-localdir"><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 id="setup-connection"><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 id="setup-mirror"><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
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<ulink url="https://cygwin.com/mirrors.html"/>
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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 id="setup-packages"><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 the
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<ulink url="https://sourceware.org/cygwin-apps/setup.html">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 hierarchical 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>Pending</literal> (only packages to be
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installed, removed or 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 as if
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you have 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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To avoid unintentionally upgrading, use the <literal>Pending</literal>
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view to see which packages have been marked for upgrading. If you
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don't want to upgrade a package, click on the new version number to
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toggle it until it says <literal>Keep</literal>. All packages can be
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set to stay at the installed version by pressing the <literal>Keep</literal>
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button in the top right part of the chooser window.
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</para>
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<para>
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A previous version of each package is usually available, in case downgrading
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is required to avoid a serious bug in the current version of the package.
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Packages also occasionally have testing (or "experimental") versions available.
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Previous and experimental versions can be chosen by clicking on the package's
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<literal>New</literal> column until the required version appears.
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</para>
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<para>
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All available experimental packages can be selected by pressing the
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<literal>Exp</literal> in the top right part of the chooser window.
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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 all old or experimental versions with the current
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version, unless told otherwise.
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</para>
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</sect2>
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<sect2 id="setup-progress"><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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shows 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 id="setup-icons"><title>Shortcuts</title>
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<para>
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You may choose to install "Cygwin Terminal" shortcuts on the Desktop
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and/or Start Menu. These shortcuts run <command>mintty</command>,
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which will start your default shell as specified
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in <filename>/etc/passwd</filename>.
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</para>
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</sect2>
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<sect2 id="setup-postinstall"><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.
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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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<sect2 id="setup-troubleshooting"><title>Troubleshooting</title>
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<para>
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Unfortunately, the complex setup process means that odd problems can
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occur. If you're having trouble downloading packages, it may be network
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congestion, so try a different mirror and/or a different protocol (i.e.,
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HTTP instead of FTP). If you notice something is not working after
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running setup, you can check the <command>setup.exe</command> log file
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at <literal>/var/log/setup.log.full</literal>. Make a backup of this
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file before running <command>setup.exe</command> again, and follow the
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steps for <ulink url="https://cygwin.com/problems.html">Reporting
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Problems with Cygwin</ulink>.
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</para>
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</sect2>
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</sect1>
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<xi:include href="setup-env.xml"/>
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<xi:include href="setup-maxmem.xml"/>
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<xi:include href="setup-locale.xml"/>
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<xi:include href="setup-files.xml"/>
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</chapter>
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