RE: Cygwin Registry Entries and Scriptability?

RE: Cygwin Registry Entries and Scriptability?

[Larry Hall (RFK Partners, Inc)]

At 03:27 PM 2/14/2002, Mack, Daemian wrote:
> > >I'd like confirmation or denial of this, because I'd like to 
> > move forward
> > >without scripting a full Cygwin installation, using only 
> > these three files.
> > 
> > I'm not sure what you mean by a "full Cygwin installation, 
> > using only these
> > three files".  To people on this list, a full Cygwin 
> > installation is more
> > than just the three files you indicate.
>
>*Without* scripting the full installation.  From the viewpoint of my install
>package, it's infinitely easier to copy three files into a temporary working
>directory, run them, then delete them, without worrying about a full
>installation of Cygwin.


OK.  If you keep yourself pointed at the temporary working directory and 
no other Cygwin installation is present or loaded at the time, this should
be OK.


> > It's worth noting that the installation you're describing would be 
> > considered a custom one by this list and should come with its own 
> > support channel.  This list can't be it.  I suspect that 
> > you're aware of
> > this but in case you're not, it's an important point to consider.
>
>I do realize this.  What I'm asking is no more than this: is a full Cygwin
>installation required in order for bash.exe to use rsync.exe to read from
>and write to the local Windows filesystem?  Or are these two files -- plus
>the cygwin.dll -- sufficient for this purpose?



Yep, should be.



Larry Hall                              lhall@rfk.com
RFK Partners, Inc.                      http://www.rfk.com
838 Washington Street                   (508) 893-9779 - RFK Office
Holliston, MA 01746                     (508) 893-9889 - FAX


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RE: cygwin Registry Entries and Scriptability?

[Mack, Daemian]

> On Thu, Feb 14, 2002 at 03:27:04PM -0500, Mack, Daemian wrote:
> >I do realize this.  What I'm asking is no more than this: is 
> a full Cygwin
> >installation required in order for bash.exe to use rsync.exe 
> to read from
> >and write to the local Windows filesystem?  Or are these two 
> files -- plus
> >the cygwin.dll -- sufficient for this purpose?
> 
> Hmm.  Didn't my response suffice?  

Judging by the evidence before us, the answer here is clearly no.  But thank
you for trying.



> If you are finding that the three files
> work, then obviously you don't need anything else.

Well, that's what two hours of tinkering on a couple of Windows boxes have
suggested.  I'd obviously require independent confirmation before I go
mucking about with customers' production data.  I think I've gotten it now;
I appreciate your input.


Daemian Mack

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RE: Cygwin Registry Entries and Scriptability?

[Mack, Daemian]

> >I do realize this.  What I'm asking is no more than this: is 
> a full Cygwin
> >installation required in order for bash.exe to use rsync.exe 
> to read from
> >and write to the local Windows filesystem?  Or are these two 
> files -- plus
> >the cygwin.dll -- sufficient for this purpose?
> 
> Yep, should be.

Excellent.  Thank you!


Daemian Mack


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Re: cygwin Registry Entries and Scriptability?

[Christopher Faylor]

On Thu, Feb 14, 2002 at 03:27:04PM -0500, Mack, Daemian wrote:
>I do realize this.  What I'm asking is no more than this: is a full Cygwin
>installation required in order for bash.exe to use rsync.exe to read from
>and write to the local Windows filesystem?  Or are these two files -- plus
>the cygwin.dll -- sufficient for this purpose?

Hmm.  Didn't my response suffice?  If you are finding that the three files
work, then obviously you don't need anything else.

cgf

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RE: Cygwin Registry Entries and Scriptability?

[Mack, Daemian]

> >I'd like confirmation or denial of this, because I'd like to 
> move forward
> >without scripting a full Cygwin installation, using only 
> these three files.
> 
> I'm not sure what you mean by a "full Cygwin installation, 
> using only these
> three files".  To people on this list, a full Cygwin 
> installation is more
> than just the three files you indicate.

*Without* scripting the full installation.  From the viewpoint of my install
package, it's infinitely easier to copy three files into a temporary working
directory, run them, then delete them, without worrying about a full
installation of Cygwin.
 


> It's worth noting that the installation you're describing would be 
> considered a custom one by this list and should come with its own 
> support channel.  This list can't be it.  I suspect that 
> you're aware of
> this but in case you're not, it's an important point to consider.

I do realize this.  What I'm asking is no more than this: is a full Cygwin
installation required in order for bash.exe to use rsync.exe to read from
and write to the local Windows filesystem?  Or are these two files -- plus
the cygwin.dll -- sufficient for this purpose?

Thanks for the quick response, by the way.


Daemian Mack

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Re: cygwin Registry Entries and Scriptability?

[Larry Hall (RFK Partners, Inc)]

At 03:13 PM 2/14/2002, Christopher Faylor wrote:
>On Thu, Feb 14, 2002 at 02:51:29PM -0500, Mack, Daemian wrote:
> >I've heard that the way I'm doing it might not be correct, mostly because
> >the full setup of Cygwin provides registry entries concerning mount points,
> >so that, for instance, the directive /cygdrive/c/windows/desktop means
> >something to Cygwin utilities.
>
>Cygwin doesn't need to use the registry.  It only does so when there are
>actual entries.  It isn't required to have a root directory or a /bin
>directory, etc.  The registry entries are either written by setup.exe or
>mount.exe but neither is required.
>
> >But what I'm finding with my testing is that every time I run bash.exe on a
> >machine with no other Cygwin install, these registry entries are created
> >dynamically.  I suspect cygwin1.dll is doing this when it's called by
> >bash.exe.  
>
>If you're seeing this then you're running an older version of cygwin.  It's
>possible that some of the registry "directories" might be created but there
>should be no actual data.


OK, ignore the jibberish in my response about who makes what mount/directory.
Chris's answer is the one you should pay attention to here.  The other points
I made in my response are still worth considering though.



Larry Hall                              lhall@rfk.com
RFK Partners, Inc.                      http://www.rfk.com
838 Washington Street                   (508) 893-9779 - RFK Office
Holliston, MA 01746                     (508) 893-9889 - FAX


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Re: Cygwin Registry Entries and Scriptability?

[Larry Hall (RFK Partners, Inc)]

At 02:51 PM 2/14/2002, Mack, Daemian wrote:
>Hi all.  I'm using Wise Installer to package and script an upgrade utility
>for Windows machines.  As part of this package, I'm using Cygwin's bash.exe,
>rsync.exe, and the latest cygwin1.dll.  At the moment, I'm just copying
>these three files to the hard disk on the target machine, then launching a
>bash.exe process with various arguments to rsync.exe to perform an rsync
>over the net.
>
>I've heard that the way I'm doing it might not be correct, mostly because
>the full setup of Cygwin provides registry entries concerning mount points,
>so that, for instance, the directive /cygdrive/c/windows/desktop means
>something to Cygwin utilities.
>
>But what I'm finding with my testing is that every time I run bash.exe on a
>machine with no other Cygwin install, these registry entries are created
>dynamically.  I suspect cygwin1.dll is doing this when it's called by
>bash.exe.  
>
>To all appearances, then, a full install of Cygwin seems redundant, since I
>can reference /cygdrive/c and get my work finished just fine without it.
>
>I'd like confirmation or denial of this, because I'd like to move forward
>without scripting a full Cygwin installation, using only these three files.


I'm not sure what you mean by a "full Cygwin installation, using only these
three files".  To people on this list, a full Cygwin installation is more
than just the three files you indicate.

/cygdrive is meant to represent implicit mounts to local hard drives.  The
Cygwin DLL takes care of generating these.  Other mount points (/usr/bin,
/usr/lib, and /) are created by setup.exe and are not dynamically created 
as needed.  Your biggest concerns, though, should be:

   1. Detecting an existing Cygwin installation so that your installation 
      doesn't clash with Cygwin's.

   2. Robustly handling a subsequent installation of Cygwin.

It's worth noting that the installation you're describing would be 
considered a custom one by this list and should come with its own 
support channel.  This list can't be it.  I suspect that you're aware of
this but in case you're not, it's an important point to consider.

Hope that helps,



Larry Hall                              lhall@rfk.com
RFK Partners, Inc.                      http://www.rfk.com
838 Washington Street                   (508) 893-9779 - RFK Office
Holliston, MA 01746                     (508) 893-9889 - FAX


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Re: cygwin Registry Entries and Scriptability?

[Christopher Faylor]

On Thu, Feb 14, 2002 at 02:51:29PM -0500, Mack, Daemian wrote:
>Hi all.  I'm using Wise Installer to package and script an upgrade utility
>for Windows machines.  As part of this package, I'm using Cygwin's bash.exe,
>rsync.exe, and the latest cygwin1.dll.  At the moment, I'm just copying
>these three files to the hard disk on the target machine, then launching a
>bash.exe process with various arguments to rsync.exe to perform an rsync
>over the net.
>
>I've heard that the way I'm doing it might not be correct, mostly because
>the full setup of Cygwin provides registry entries concerning mount points,
>so that, for instance, the directive /cygdrive/c/windows/desktop means
>something to Cygwin utilities.

Cygwin doesn't need to use the registry.  It only does so when there are
actual entries.  It isn't required to have a root directory or a /bin
directory, etc.  The registry entries are either written by setup.exe or
mount.exe but neither is required.

>But what I'm finding with my testing is that every time I run bash.exe on a
>machine with no other Cygwin install, these registry entries are created
>dynamically.  I suspect cygwin1.dll is doing this when it's called by
>bash.exe.  

If you're seeing this then you're running an older version of cygwin.  It's
possible that some of the registry "directories" might be created but there
should be no actual data.

cgf

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Cygwin Registry Entries and Scriptability?

[Mack, Daemian]

Hi all.  I'm using Wise Installer to package and script an upgrade utility
for Windows machines.  As part of this package, I'm using Cygwin's bash.exe,
rsync.exe, and the latest cygwin1.dll.  At the moment, I'm just copying
these three files to the hard disk on the target machine, then launching a
bash.exe process with various arguments to rsync.exe to perform an rsync
over the net.

I've heard that the way I'm doing it might not be correct, mostly because
the full setup of Cygwin provides registry entries concerning mount points,
so that, for instance, the directive /cygdrive/c/windows/desktop means
something to Cygwin utilities.

But what I'm finding with my testing is that every time I run bash.exe on a
machine with no other Cygwin install, these registry entries are created
dynamically.  I suspect cygwin1.dll is doing this when it's called by
bash.exe.  

To all appearances, then, a full install of Cygwin seems redundant, since I
can reference /cygdrive/c and get my work finished just fine without it.

I'd like confirmation or denial of this, because I'd like to move forward
without scripting a full Cygwin installation, using only these three files.
Thanks for any help.


Daemian Mack

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