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Date:	Sat, 22 Jan 2005 01:51:38 -0500 (EST)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	cygwin AT cygwin DOT com
Subject:	Re: Multiple installations and 3PPs (FAQ alert)
In-Reply-To:	<20050122043814.GA26399@trixie.casa.cgf.cx>
Message-ID:	<Pine.GSO.4.61.0501220136300.29308@slinky.cs.nyu.edu>
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On Fri, 21 Jan 2005, Christopher Faylor wrote:

> On Fri, Jan 21, 2005 at 11:17:30PM -0500, Larry Hall wrote:
> >Perhaps this was the reference Dick had in mind?
> >
> >How do I uninstall all of Cygwin?
> ><http://cygwin.com/faq/faq_toc.html#TOC20>
>
> Perhaps.
>
> Joshua, if you have a chance, could you add something about using mount
> to remove the options.  Of course, this might be sort of a chicken/egg
> thing.
>
> You could do something like:
>
> mount --remove-all-mounts
>
> Then use "My Computer" to delete the cygwin directory.
>
> This would still leave an Cygnus Solutions key in the registry, though.
>
> cgf

Should we, perhaps, provide a small 'uninstall' script, maybe in
/usr/sbin, that would perform a umount and then use regtool to remove the
registry key?  It could even be a .bat, which will enable it to delete all
of Cygwin once the last Cygwin process exits...  A postinstall script
could generate it, too, so that it contains explicit paths of the Cygwin
root directory.  Something like

------ BEGIN gen-uninst.sh ------
#!/bin/sh
CYGDIR="`/bin/cygpath -aw /`"
cat > /usr/sbin/uninstall.bat <<EOF
$CYGDIR\\umount -s -A
$CYGDIR\\umount -A
copy $CYGDIR\\cygwin1.dll $CYGDIR\\regtool.exe %TEMP%
$CYGDIR\\rm -rf /
del /s $CYGDIR
%TEMP%\\regtool remove "/HKLM/Software/Cygnus Solutions"
%TEMP%\\regtool remove "/HKCU/Software/Cygnus Solutions"
del %TEMP%\\cygwin1.dll %TEMP%\\regtool.exe
EOF
------- END gen-uninst.sh -------

(I don't recall whether the cygwin DLL will try to create the HKLM key or
only the HKCU key if none are present).
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"The Sun will pass between the Earth and the Moon tonight for a total
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