281 lines
11 KiB
Plaintext
281 lines
11 KiB
Plaintext
@chapter Installation Instructions
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@section Contents
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Unlike previous net releases such as B20.1 and earlier, there is no
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monolithic "full" or "usertools" installation. Rather, you can pick and
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choose the packages you wish to install, and update them individually.
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The following packages are available with the current release:
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@example
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ash autoconf automake bash binutils bison byacc bzip2 clear cpio cron
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crypt ctags cvs cygrunsrv cygwin dejagnu diff expect file fileutils
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findutils flex gawk gcc gdb gdbm gettext ghostscript gperf grep groff
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gzip inetutils irc jbigkit jpeg less libpng login lynx m4 make man
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mingw mingw-runtime mt mutt ncftp ncurses opengl openssh openssl patch
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pcre perl popt postgresql psutils python readline regex rsync rxvt sed
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sh-utils squid ssmtp tar tcltk tcsh termcap tetex texinfo textutils
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tiff time unzip vim w32api wget which xpm-nox zip zlib
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@end example
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(This list becomes out of date as new packages are added.)
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Full source code is available for all packages and tools.
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There is one recommended way to install Cygwin, which is to use the GUI
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installer @samp{setup.exe}. There are some variations on how you go
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about that.
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Do it any other way, and you're on your own! That said, keep in mind
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that the GUI installer is a "work in progress", so there might be a few
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difficulties, especially if you are behind a firewall or have other
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specific requirements. If something doesn't work right for you, and
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it's not covered here or elsewhere, then by all means report it to the
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mailing list.
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@section Installation using the @samp{setup.exe} program
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@strong{IMPORTANT: First read the README file in the @samp{latest}
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directory at any ftp mirror. DO THIS NOW! Information in the README
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file is not repeated here. You can find a mirror site near you from
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@file{http://cygwin.com/mirrors.html}.}
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The @samp{setup.exe} program is the recommended way to install Cygwin,
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but it is still a work in progress. Expect features and functionality
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to change. For this reason, it is a good idea to note the version and
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build time reported by @code{setup.exe} when you run it. This will help
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diagnose problems, should you have any. Check the cygwin mailing list
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for the latest news about @code{setup.exe}.
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@subsection Why not install in C:\?
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The @code{setup.exe} program will prompt you for a "root" directory.
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The default is @samp{C:\cygwin}, but you can change it. You are urged not to
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choose something like 'C:\' (the root directory on the system drive) for
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your Cygwin root. If you do, then critical Cygwin system directories
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like 'etc', 'lib' and 'bin' could easily be corrupted by other (non-Cygwin)
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applications or packages that use \etc, \lib or \bin. Perhaps there is
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no conflict now, but who knows what you might install in the future?
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It's also just good common sense to segregate your Cygwin "filesystems"
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from the rest of your Windows system disk. (In the past, there had been
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genuine bugs that would cause problems for people who installed in C:\,
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but we believe those are gone now.)
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@subsection Can I use the new setup to update a B18, B19, B20, B20.1 or CD-ROM (1.0) installation of Cygwin?
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No, you must start from scratch with the new setup. The overall
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structure has changed so much that it would be silly to try to
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accomodate old installations of Cygwin. You'll probably be much better
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off with a whole new installation anyway. You may backup or rename your
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old installation first, or just install the new one somewhere else. Be
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sure to make note of your current mount table, because this will be
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overwritten during the new setup.
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Once you've installed the latest net release, the new setup will update
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just the individual packages that need it.
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@subsection Is @code{setup.exe}, or one of the packages, infected with a virus?
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Unlikely. Unless you can confirm it, please don't report it to the
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mailing list. Anti-virus products have been known to detect false
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positives when extracting compressed tar archives. If this causes
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problems for you, consider disabling your anti-virus software when
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running @code{setup}. Read the next entry for a fairly safe way to do
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this.
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@subsection My computer hangs when I try to run @code{setup.exe}!
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Network Associates (formerly McAfee) products have been reported to
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"hang" when extracting Cygwin tar archives. Consider disabling your
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anti-virus software when running @code{setup}. The following
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procedure should be a fairly safe way to do that:
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@enumerate
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@item Download @code{setup.exe} and scan it explicitly.
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@item Turn off the anti-virus software.
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@item Run setup to download and extract all the tar files.
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@item Re-activate your anti-virus software and scan everything
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in C:\cygwin (or wherever you chose to install).
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@end enumerate
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This should be safe, as long as nobody substitutes a malicious
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@code{setup.exe}!
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@subsection What packages should I download?
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Just get everything, if you have room for it. But if you must be
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selective:
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@table @samp
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@item cygwin
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This is the minimum core, consisting of the cygwin1.dll and a few
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commands (like @code{mount}). Not much else, and no shell!
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@item bash
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This is the default interactive command shell for cygwin. If you don't
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install @samp{bash}, then the "Cygwin Bash Shell" shortcut that setup
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creates for you won't actually do anything.
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@item ash
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This is often forgotten because it's not obvious that @samp{ash}
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contains @code{/bin/sh}, which is essential for running scripts (and
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@samp{make} and ...).
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@end table
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If you want to build programs, of course you'll need @samp{gcc}, but
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you'll also need @samp{binutils}, probably @samp{make} and
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@samp{fileutils}, and possibly lots more. (Again, consider just getting
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everything!)
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@subsection How much disk space does Cygwin require?
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All the packages listed above comprise about 55MB when downloaded.
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This expands to about 230MB in your ``install root directory''
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(@code{C:\cygwin} by default). If you download source archives for
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all packages, that's an additional 110MB. These estimates are based
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on measurements taken 22 Sep 2001.
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After installation, the package archives remain in your ``Local Package
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Directory'', by default the location of @code{setup.exe}. You may
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conserve disk space by deleting the @code{contrib} and @code{latest}
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subdirectories there.
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@subsection What if setup fails?
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First, make sure that you are using the latest version of
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@code{setup.exe}. It's a work in progress, with improvements and
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bugfixes being made often. The latest version is always available from
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the 'Install Cygwin now' link on the Cygwin Home Page at
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@file{http://cygwin.com/}.
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If you are downloading from the internet, setup will fail if it cannot
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download the list of mirrors at
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@file{http://cygwin.com/mirrors.html}. It could be that
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the network is too busy. Similarly for an ftp download site that isn't
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working. Try another mirror, or try again later.
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If setup refuses to download a package that you know needs to be
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upgraded, try deleting that package's entry from /etc/setup. If you are
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reacting quickly to an announcement on the mailing list, it could be
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that the mirror you are using doesn't have the latest copy yet. Try
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another mirror, or try again tomorrow.
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If setup has otherwise behaved strangely, check the files
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@samp{setup.log} and @samp{setup.log.full} in the Cygwin root directory
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(@code{C:\cygwin} by default). It may provide some clues as to what
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went wrong and why.
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If you're still baffled, search the Cygwin mailing list for clues.
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Others may have the same problem, and a solution may be posted there.
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If that search proves fruitless, send a query to the Cygwin mailing
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list. You must provide complete details in your query: version of
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setup, options you selected, contents of setup.log and setup.log.full,
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what happened that wasn't supposed to happen, etc.
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@subsection What's the difference between packages in @samp{latest} and @samp{contrib}?
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There is no difference as far as @code{setup.exe} is concerned, and you
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should not worry about this either. The distinction is more historical
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than practical.
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@subsection My Windows logon name has a space in it, will this cause problems?
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Most definitely yes! UNIX shells (and thus Cygwin) use the space
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character as a word delimiter. Under certain circumstances, it is
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possible to get around this with various shell quoting mechanisms, but
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you are much better off if you can avoid the problem entirely.
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In particular, the environment variables @samp{USER} and @samp{HOME} are
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set for you in /etc/profile. By default these derive from your Windows
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logon name. You may edit this file and set them explicitly to something
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without spaces.
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(If you use the @samp{login} package or anything else that reads
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/etc/passwd, you may need to make corresponding changes there. See the
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README file for that package.)
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@subsection How do I uninstall individual packages?
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Run @code{setup.exe} as you would to install packages. In the list of
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packages to install, click on the @samp{Full/Part} button to get a
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full listing, if the package you want to uninstall is not already
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listed. Click on the cycle glyph until the action reads
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@samp{Uninstall}. Proceed with @samp{Next}.
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@subsection How do I uninstall @strong{all} of Cygwin?
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Setup has no automatic uninstall facility. Just delete everything
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manually:
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@itemize @bullet
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@item Cygwin shortcuts on the Desktop and Start Menu
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@item The registry tree @samp{Software\Cygnus Solutions} under
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@code{HKEY_LOCAL_MACHINE} and/or @code{HKEY_CURRENT_USER}.
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@item Anything under the Cygwin root folder, @samp{C:\cygwin} by
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default.
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@item Anything created by setup in its temporary working directory.
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@end itemize
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It's up to you to deal with other changes you made to your system, such
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as installing the inetd service, altering system paths, etc. Setup
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would not have done any of these things for you.
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@subsection Can I use setup to install snapshots?
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No. It used to be possible, but not any more.
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If experimenting with developer snapshots from
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@file{http://cygwin.com/snapshots/}, you should generally install the
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full @code{cygwin-inst-YYYYMMDD.tar.bz2} update, rather than just the
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DLL, otherwise some components may be out of sync. Cygwin tar won't be
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able to update @code{/usr/bin/cygwin1.dll}, but it should succeed with
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everything else. The following steps should work:
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@enumerate
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@item Download the snapshot, and run:
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@example
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cd /
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tar jxvf /posix/path/to/cygwin-inst-YYYYMMDD.tar.bz2 --exclude=usr/bin/cygwin1.dll
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cd /tmp
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tar jxvf /posix/path/to/cygwin-inst-YYYYMMDD.tar.bz2 usr/bin/cygwin1.dll
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@end example
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@item After closing all Cygwin apps (see below), use Explorer or the
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Windows command shell to move @code{C:\cygwin\tmp\usr\bin\cygwin1.dll}
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to @code{C:\cygwin\bin\cygwin1.dll}.
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@end enumerate
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The obvious warnings about updating the cygwin package and using developer
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snapshots apply:
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@enumerate
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@item Close all Cygwin apps, including shells and services
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(e.g. inetd), before updating @code{cygwin1.dll}. You may have to
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restart Windows to clear the DLL from memory.
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@item Snapshots are risky. They have not been tested. Use them
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@strong{only} if there is a feature or bugfix that you need to try,
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and you are willing to deal with any problems.
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@item If you cannot download a snapshot from the main ftp distribution
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site, use a mirror, and look in the @samp{snapshots} directory. You may
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have to hunt for one that has a copy of the latest snapshot. Start at
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@file{http://cygwin.com/mirrors.html}.
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@end enumerate
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