X-Spam-Check-By: sourceware.org
Message-ID: <97b0303c0603270526w1d150090wb514b23ff56db265@mail.gmail.com>
Date: Mon, 27 Mar 2006 20:26:29 +0700
From: "Alexander Herrmann" <ping2weltall AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Multiple cygwin installs
In-Reply-To: <Pine.GSO.4.63.0603270808570.4022@access1.cims.nyu.edu>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Disposition: inline
References: <4427561D DOT 4060300 AT scytek DOT de> 	 <20060327033442 DOT GA4757 AT trixie DOT casa DOT cgf DOT cx> 	 <20060327035423 DOT GB4757 AT trixie DOT casa DOT cgf DOT cx> 	 <442768EE DOT 6090105 AT activeclickweb DOT com> <44276D1C DOT 20403 AT cygwin DOT com> 	 <Pine DOT GSO DOT 4 DOT 63 DOT 0603270808570 DOT 4022 AT access1 DOT cims DOT nyu DOT edu>
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id k2RDQcqp001297

On 3/27/06, Igor Peshansky <pechtcha AT cs DOT nyu DOT edu> wrote:
> On Sun, 26 Mar 2006, Larry Hall (Cygwin) wrote:
>
> > Brian Hawkins wrote:
> > > Just FYI.  I found a pretty good way to manage multiple cygwin installs.
> > >
> > > I use the windows subst command.
> > >
> > > It works like this.  Create a directory c:\cyginstalls.  Then beneath
> > > it create a directory for each cygwin install you want like cygwin1,
> > > cygwin2 whatever.  Then use the subst command like so:
> > > subst x: c:\cyginstalls\cygwin1
> > >
> > > Now install cygwin to x:\.  Change the subst to c:\cyginstalls\cygwin2
> > > and install again to x:\.
> > >
> > > To choose what cygwin you use just subst x to the appropriate folder.
> > > Kind of a poor mans symbolic link.
> >
> > Why are you commandeering one thread to inject another?  If you have
> > something you want to say and it has nothing to do with any previous
> > thread, just start a new one by sending email to the list.
>
> Very true.
>
> > The flaw that I see with your approach is that you're not taking into
> > account any existing mounts in the mount table.  Without resetting the
> > mount table in between each installation, you will very likely end up
> > with subsequent installations overwriting the first one.
>
> Not quite true.  The mounts aren't a problem in this case, since they'll
> be pointing to x: (not whatever x: is substed to).  However, you have to
> make *very* sure that a) none of these directories are in the PATH, and b)
> none of the programs in those directories are invoked explicitly (in
> particular, services will be a problem).
>
> > FWIW, if you want something similar to symbolic links for directories
> > and you're running W2K or above with NTFS, you can use reparse points.
> > See the "junction" utility from www.sysinternal.com if you're interested
> > in this.
This link is broken(@ least for me) takes you to a popup netster.com site.


>
> True, but the same exact issues arise regarding the PATH and running
> programs/services.
>         Igor
> --
>                                 http://cs.nyu.edu/~pechtcha/
>       |\      _,,,---,,_            pechtcha AT cs DOT nyu DOT edu | igor AT watson DOT ibm DOT com
> ZZZzz /,`.-'`'    -.  ;-;;,_            Igor Peshansky, Ph.D. (name changed!)
>      |,4-  ) )-,_. ,\ (  `'-'           old name: Igor Pechtchanski
>     '---''(_/--'  `-'\_) fL     a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!
>
> "Las! je suis sot... -Mais non, tu ne l'es pas, puisque tu t'en rends compte."
> "But no -- you are no fool; you call yourself a fool, there's proof enough in
> that!" -- Rostand, "Cyrano de Bergerac"
>
> --
> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> Problem reports:       http://cygwin.com/problems.html
> Documentation:         http://cygwin.com/docs.html
> FAQ:                   http://cygwin.com/faq/
>
>


--
Take a look - not only for computer people ;) http://www.seabreeze.co.th

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/