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Native Window version of rsync

Posted by dtktvu 
Native Window version of rsync
November 18, 2008 08:59PM
Hi,

Based on the source from Kolosy (http://www.kolosy.com/wordpress/?p=8 ), we have continued the journey and successully ported Rsync to C# (protocol 28 ). So far, the program has the following features:
1. Lots of features just like Rsync, supporting protocol up to 28.
2. No need for cygwin. However, it's required .NET framework version 3.5
3. Utilise Volume Shadow Copy Service (aka VSS, on XP machines only) so that now it will do the work on shadow copy (configurable parameter on config file) and copy even opened files, exchange files, SQL files, etc.
4. Zlib compression supported
5. Running as a windows service (daemon), working fine with BackupPC and rsync on unix platform.
6. Can produce rdiff-backup alike signature/delta file.
7. Unicode filename supported.
8. Ultilise nearly maximum network bandwidth. During testing, we are getting around 11-12MB/s on 100Mbs network.
9. Many mores...

Many thanks to Kolosy!

Please let us know if anyone interested in having a test on this program.

Thanks.
Native Window version of rsync
November 18, 2008 09:21PM
This is excellent news!

I for one would be very interested in testing the software. Is the
latest version available in Kolosy's repository?

--
Paul Mantz
http://www.mcpantz.org
BackupPC - Network Backup with De-Duplication http://www.backuppc.com
Zmanda - Open source backup and recovery http://www.zmanda.com/

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Native Window version of rsync
November 18, 2008 10:49PM
I'm very interested in trying this, sounds brilliant!The author doesn't sound too optimistic though, but I'll try it none the less!
Thanks for the link!

Riaan Schoeman
Teqcle Information Technologies (Pty) Ltd.

riaans < at > teqcle.co.za ([email]riaans < at > teqcle.co.za[/email])
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On 19 Nov 2008, at 6:59 AM, dtktvu wrote:
[quote]
Hi,

Based on the source from Kolosy ([url=http://www.kolosy.com/wordpress/?p=8]http://www.kolosy.com/wordpress/?p=8[/url] ), we have continued the journey and successully ported Rsync to C# (protocol 28 ). So far, the program has the following features:
1. Lots of features just like Rsync, supporting protocol up to 28.
2. No need for cygwin. However, it's required .NET framework version 3.5
3. Utilise Volume Shadow Copy Service (aka VSS, on XP machines only) so that now it will do the work on shadow copy (configurable parameter on config file) and copy even opened files, exchange files, SQL files, etc.
4. Zlib compression supported
5. Running as a windows service (daemon), working fine with BackupPC and rsync on unix platform.
6. Can produce rdiff-backup alike signature/delta file.
7. Unicode filename supported.
8. Ultilise nearly maximum network bandwidth. During testing, we are getting around 11-12MB/s on 100Mbs network.
9. Many mores...

Many thanks to Kolosy!

Please let us know if anyone interested in having a test on this program.

Thanks.

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[/quote]
Native Window version of rsync
November 19, 2008 07:37AM
We would be very interested. :)

-----Original Message-----
From: dtktvu [mailto]
Sent: 19 November 2008 05:00
To: backuppc-users < at > lists.sourceforge.net
Subject: [BackupPC-users] Native Window version of rsync

Hi,

Based on the source from Kolosy (http://www.kolosy.com/wordpress/?p=8 ), we have continued the journey and successully ported Rsync to C# (protocol 28 ). So far, the program has the following features:
1. Lots of features just like Rsync, supporting protocol up to 28.
2. No need for cygwin. However, it's required .NET framework version 3.5
3. Utilise Volume Shadow Copy Service (aka VSS, on XP machines only) so that now it will do the work on shadow copy (configurable parameter on config file) and copy even opened files, exchange files, SQL files, etc.
4. Zlib compression supported
5. Running as a windows service (daemon), working fine with BackupPC and rsync on unix platform.
6. Can produce rdiff-backup alike signature/delta file.
7. Unicode filename supported.
8. Ultilise nearly maximum network bandwidth. During testing, we are getting around 11-12MB/s on 100Mbs network.
9. Many mores...

Many thanks to Kolosy!

Please let us know if anyone interested in having a test on this program.

Thanks.

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Native Window version of rsync
November 19, 2008 07:46AM
I'd like to take a look at this. Is this going to be released under the
GPL as RSYNC is?

dtktvu wrote:
[quote]Hi,

Based on the source from Kolosy (http://www.kolosy.com/wordpress/?p=8 ), we have continued the journey and successully ported Rsync to C# (protocol 28 ). So far, the program has the following features:
1. Lots of features just like Rsync, supporting protocol up to 28.
2. No need for cygwin. However, it's required .NET framework version 3.5
3. Utilise Volume Shadow Copy Service (aka VSS, on XP machines only) so that now it will do the work on shadow copy (configurable parameter on config file) and copy even opened files, exchange files, SQL files, etc.
4. Zlib compression supported
5. Running as a windows service (daemon), working fine with BackupPC and rsync on unix platform.
6. Can produce rdiff-backup alike signature/delta file.
7. Unicode filename supported.
8. Ultilise nearly maximum network bandwidth. During testing, we are getting around 11-12MB/s on 100Mbs network.
9. Many mores...

Many thanks to Kolosy!

Please let us know if anyone interested in having a test on this program.

Thanks.

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[/quote]

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Native Window version of rsync
November 19, 2008 07:46AM
James Sefton wrote:
[quote]We would be very interested. :)

[/quote]

I would as well.

Doug

--

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"Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."

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Native Window version of rsync
November 19, 2008 07:49AM
dtktvu <backuppc-forum < at > backupcentral.com> wrote on 11/18/2008 11:59:55 PM:

[quote]Based on the source from Kolosy (http://www.kolosy.com/wordpress/?p=8
), we have continued the journey and successully ported Rsync to C#
(protocol 28 ). So far, the program has the following features:
[/quote]

[quote]Please let us know if anyone interested in having a test on this
[/quote]program.

Yes, please! :)

Volume Shadow Copy is a *very* nice feature that I would love to have.

Tim Massey
Native Window version of rsync
November 19, 2008 03:21PM
Cool,

Let us prepare an installation package as it also comes with a GUI allowing you to configure files to be excluded/included from backup.

Also, I forgot to mention, the program also has built in dd's (Disk Duplicate, another well-known utility from UNIX) functionalities, allowing you to backup MBR (Master Boot Record) too!

By the way VSS also works on Vista and 2003 server.

Currently we are working on Continuous Data Protection (CDP). Hopefully this will be released soon...
Native Window version of rsync
November 19, 2008 03:59PM
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

dtktvu wrote:
[quote]Cool,

Let us prepare an installation package as it also comes with a GUI allowing you to configure files to be excluded/included from backup.

Also, I forgot to mention, the program also has built in dd's (Disk Duplicate, another well-known utility from UNIX) functionalities, allowing you to backup MBR (Master Boot Record) too!

By the way VSS also works on Vista and 2003 server.

Currently we are working on Continuous Data Protection (CDP). Hopefully this will be released soon...

[/quote]
The biggest question in my mind is whether this will be an open source
application or commercial ?

Either way, it sounds like the perfect complement to backuppc though.

One feature that might be quite helpful is to allow a remote server to
specify what is backed up instead of the local application... (actually,
I thought this was the way rsyncd worked anyway?).

Regards,
Adam

- --
Adam Goryachev
Website Managers
www.websitemanagers.com.au
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Native Window version of rsync
November 19, 2008 04:19PM
It's still being discussed whether it's going to be open source or commercial. Right now, looks like it's going to be free to download type...

The ability for remote server to specify what is backed up is still there, as well as local application can also specify its own OS-specific exclusion like pagefile, Internet Temporary Folder, etc.
Native Window version of rsync
November 19, 2008 04:35PM
On Wed, Nov 19, 2008 at 4:19 PM, dtktvu
<backuppc-forum < at > backupcentral.com> wrote:
[quote]It's still being discussed whether it's going to be open source or commercial.
Right now, looks like it's going to be free to download type...
[/quote]
If you used the rsync source code to create the rsync .NET version, I
think that you may be legally required to keep the software licensed
under the GPL if you distribute it.

If you only used the rsync algorithms and interfaces to create the
port, then you should be able to license the software any way you
wish.

But IANAL.

-Dave

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Native Window version of rsync
November 19, 2008 04:55PM
this is true. rsync is GPL so this MUST be GPL because the GPL is viral.

On Wed, Nov 19, 2008 at 5:33 PM, David Rees <drees76 < at > gmail.com ([email]drees76 < at > gmail.com[/email])> wrote:
[quote]On Wed, Nov 19, 2008 at 4:19 PM, dtktvu
<backuppc-forum < at > backupcentral.com ([email]backuppc-forum < at > backupcentral.com[/email])> wrote:
[quote]It&#39;s still being discussed whether it&#39;s going to be open source or commercial.
Right now, looks like it&#39;s going to be free to download type...
[/quote]

If you used the rsync source code to create the rsync .NET version, I
think that you may be legally required to keep the software licensed
under the GPL if you distribute it.

If you only used the rsync algorithms and interfaces to create the
port, then you should be able to license the software any way you
wish.

But IANAL.

-Dave

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[/quote]
Native Window version of rsync
November 19, 2008 05:06PM
We don't use rsync source code, but just the algorithms and interface to create the port (with some helps based on Kolosy's version). That's why it's still being discussed whether it should be open source or commercial...
Native Window version of rsync
November 19, 2008 06:38PM
the rync algorythm is actually part of the GPL code released by Andrew Tridgell.

Like I said, GPL is viral. Tridgell released this algorythm as a part of rsync undel GPL so use of the exact algorythm requires a GPL license.

You may reverse engineer the functionality but you cannot use the algoryth, just a work-alike.

If you have even looked at the code for rsync, you will likely be infringing on the GPL if you license this anything but GPL.

I am not some GPL nazi, I am just making this point.

You might run into some other problems if using GPL code in a C# environment if you are using shared libraries that are not GPL.

On Wed, Nov 19, 2008 at 6:06 PM, dtktvu <backuppc-forum < at > backupcentral.com ([email]backuppc-forum < at > backupcentral.com[/email])> wrote:
[quote]
We don&#39;t use rsync source code, but just the algorithms and interface to create the port (with some helps based on Kolosy&#39;s version). That&#39;s why it&#39;s still being discussed whether it should be open source or commercial...

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[/quote]
Native Window version of rsync
November 19, 2008 07:02PM
Hmm, I see...

Thanks very much for pointing that out.

BTW, what do you mean by "You might run into some other problems if using GPL code in a C# environment if you are using shared libraries that are not GPL"?

Thanks.
Native Window version of rsync
November 19, 2008 07:13PM
On Wed, Nov 19, 2008 at 6:34 PM, dan <dandenson < at > gmail.com> wrote:
[quote]the rync algorythm is actually part of the GPL code released by Andrew
Tridgell.
[/quote]
Yes, it is, but you can not Copyright algorithms, and you can't
protect them from reverse engineering. You can patent an algorithm,
but I know of no such patents on the algorithms used by rsync (not
that I've looked).

[quote]Like I said, GPL is viral. Tridgell released this algorythm as a part of
rsync undel GPL so use of the exact algorythm requires a GPL license.
[/quote]
Please stop using the term viral, as the GPL is not viral. Google it.
The terms of which GPLed software is licensed are quite clear to
those who wish to read the license.

[quote]You may reverse engineer the functionality but you cannot use the algoryth,
just a work-alike.
[/quote]
This is not true.

[quote]If you have even looked at the code for rsync, you will likely be infringing
on the GPL if you license this anything but GPL.
[/quote]
This coud be true which is why I bought up my concern. That is why if
there is any doubt, one should always perform a clean-room reverse
engineering effort to produce compatible works.

[quote]I am not some GPL nazi, I am just making this point.
[/quote]
[quote]You might run into some other problems if using GPL code in a C# environment
if you are using shared libraries that are not GPL.
[/quote]
Another myth. Please stop spreading FUD.

-Dave

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Native Window version of rsync
November 19, 2008 07:20PM
On Wed, Nov 19, 2008 at 7:11 PM, David Rees <drees76 < at > gmail.com> wrote:
[quote]On Wed, Nov 19, 2008 at 6:34 PM, dan <dandenson < at > gmail.com> wrote:
[quote]the rync algorythm is actually part of the GPL code released by Andrew
Tridgell.
[/quote]
Yes, it is, but you can not Copyright algorithms, and you can't
protect them from reverse engineering. You can patent an algorithm,
but I know of no such patents on the algorithms used by rsync (not
that I've looked).
[/quote]
A reference for my claim:
http://www.iusmentis.com/copyright/software/protection/

-Dave

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Native Window version of rsync
November 19, 2008 07:48PM
excuse me for arguing a few of these...

On Wed, Nov 19, 2008 at 8:11 PM, David Rees <drees76 < at > gmail.com ([email]drees76 < at > gmail.com[/email])> wrote:
[quote] On Wed, Nov 19, 2008 at 6:34 PM, dan <dandenson < at > gmail.com ([email]dandenson < at > gmail.com[/email])> wrote:
[quote]the rync algorythm is actually part of the GPL code released by Andrew
Tridgell.
[/quote]

Yes, it is, but you can not Copyright algorithms, and you can&#39;t
protect them from reverse engineering. You can patent an algorithm,
but I know of no such patents on the algorithms used by rsync (not
that I&#39;ve looked).[/quote]
I believe this is somewhat of a grey area. You will find many references of this going either way on google.

[quote]

[quote]Like I said, GPL is viral. Tridgell released this algorythm as a part of
rsync undel GPL so use of the exact algorythm requires a GPL license.
[/quote]

Please stop using the term viral, as the GPL is not viral. Google it.
The terms of which GPLed software is licensed are quite clear to
those who wish to read the license.[/quote]
I suppose the term viral implies evil or bad which is not what I meant to say. What I mean is that GPL code will require derivative code to also be GPL. This is clear and one of the few real issues that man companies have and partly why BSD licenses and other non-GPL open source licenses have gained some popularity. As many people here will agree, the GPL has a lot of good qualities and I am a supporter.

[quote]

[quote]You may reverse engineer the functionality but you cannot use the algoryth,
just a work-alike.
[/quote]

This is not true.[/quote]
this is really just an extension of the previous point. It can go either way.

[quote]

[quote]If you have even looked at the code for rsync, you will likely be infringing
on the GPL if you license this anything but GPL.
[/quote]

This coud be true which is why I bought up my concern. That is why if
there is any doubt, one should always perform a clean-room reverse
engineering effort to produce compatible works.[/quote]
a clean room easily clears you from GPL violation. Additionally you might get

[quote]

[quote]I am not some GPL nazi, I am just making this point.
[/quote]
[quote]You might run into some other problems if using GPL code in a C# environment
if you are using shared libraries that are not GPL.
[/quote]

Another myth. Please stop spreading FUD.

-Dave

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[/quote]
Native Window version of rsync
November 19, 2008 08:12PM
ahh! keyboard shortcuts are a mixed blessing! didnt mean to send it yet.....here is the continuation

[quote]
[quote]

[quote]If you have even looked at the code for rsync, you will likely be infringing
on the GPL if you license this anything but GPL.
[/quote]

This coud be true which is why I bought up my concern. That is why if
there is any doubt, one should always perform a clean-room reverse
engineering effort to produce compatible works.[/quote]

[/quote]
a clean room easily clears you from GPL violation. Additionally you might get the author to clear your code which would eliminate any issues as well especially if you credit the original author for inspriation or whatever. GPL coders are certianly influenced by such compliments.

[quote][quote]

[quote]I am not some GPL nazi, I am just making this point.
[/quote]
[quote]You might run into some other problems if using GPL code in a C# environment
if you are using shared libraries that are not GPL.
[/quote]

Another myth. Please stop spreading FUD.[/quote]

[/quote]
This is no myth. The GPL clearly states that GPL&#39;d code cannot be linked with or to incompatible licensed code. *Some* shared libraries that may be used when programming in C# may be licensed in a non-GPL compatible license. Case in point: Stallman&#39;s standpoint that nvidia binary drivers violate the GPL because they link into the Kernel (GPL) but have a non-GPL compatible license. I&#39;m just saying that one should be considerate of the shared libraries license.

Go ahead and develope and license as you please. I am just making suggestions

I wish these guys good luck and look forward to seeing their software progress. Considering that this is .Net, I&#39;m looking forward to having an rsync client that will run on server2008/Vista 64bit as cygwin doesnt care for the 64bit part.
Native Window version of rsync
November 20, 2008 05:16AM
dan wrote:
[quote]excuse me for arguing a few of these...

On Wed, Nov 19, 2008 at 8:11 PM, David Rees <drees76 < at > gmail.com
<mailto:drees76 < at > gmail.com>> wrote:

On Wed, Nov 19, 2008 at 6:34 PM, dan <dandenson < at > gmail.com
<mailto:dandenson < at > gmail.com>> wrote:
[quote]the rync algorythm is actually part of the GPL code released by Andrew
Tridgell.
[/quote]
Yes, it is, but you can not Copyright algorithms, and you can't
protect them from reverse engineering. You can patent an algorithm,
but I know of no such patents on the algorithms used by rsync (not
that I've looked).

I believe this is somewhat of a grey area. You will find many
references of this going either way on google.

[/quote]
I've read the GPL a few times, but still I'm no expert. However, I
think you guys are missing a key word here: code. The code is
copyrighted. The ideas are not. Ideas can be used by anyone, but if
you use GPL code then the derivative work must also be released as GPL
(if it is released at all).

-Rob
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Native Window version of rsync
November 20, 2008 07:26AM
On Wed, Nov 19, 2008 at 8:18 PM, David Rees <drees76 < at > gmail.com ([email]drees76 < at > gmail.com[/email])> wrote:
[quote] On Wed, Nov 19, 2008 at 7:11 PM, David Rees <drees76 < at > gmail.com ([email]drees76 < at > gmail.com[/email])> wrote:
[quote]On Wed, Nov 19, 2008 at 6:34 PM, dan <dandenson < at > gmail.com ([email]dandenson < at > gmail.com[/email])> wrote:
[quote]the rync algorythm is actually part of the GPL code released by Andrew
Tridgell.
[/quote]
Yes, it is, but you can not Copyright algorithms, and you can&#39;t
protect them from reverse engineering. You can patent an algorithm,
but I know of no such patents on the algorithms used by rsync (not
that I&#39;ve looked).
[/quote]

A reference for my claim:
[url=http://www.iusmentis.com/copyright/software/protection/]http://www.iusmentis.com/copyright/software/protection/[/url]

-Dave

[/quote]

I read it. I think that the argue ment against is that the algorythm could be considered a creative work. Your article uses a "hello world" as an example. It doesnt require creativity to say, I need this to say something and then type up a bit of code to show a dialog "hello world". Rsync&#39;s algorythm is fairly simple in progression but simplicity doesnt matter to copyright, only that the process is actually a creating work and not a logic progression.

I can see how this argument can go either way so I am conceeding this one to you. You are certainly right in that I can see no flaw in your argument, I just disagree.
Native Window version of rsync
November 20, 2008 11:00AM
dtktvu wrote:
[quote]Hmm, I see...

Thanks very much for pointing that out.

BTW, what do you mean by "You might run into some other problems if using GPL code in a C# environment if you are using shared libraries that are not GPL"?

[/quote]
If you are statically linking libraries that do not use a GPL compatible
license, you may not be able to legally distribute your code. The GPL
says is that if you make a derived work from a project that is GPL
licensed which incorporates components that are not GPL'd, you can't
distribute the derived work. It doesn't (and legally can't) force the
GPL onto someone else's code.

[quote]Thanks.
[/quote]
You might also want to see http://www.gnu.org/cgi-bin/license-quiz.cgi.

Chris

P.S. Standard disclaimers apply. I am not a lawyer. This is not legal
advise.

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Native Window version of rsync
November 20, 2008 11:10PM
dtktvu wrote at about 23:59:55 -0500 on Tuesday, November 18, 2008:
[quote]

Based on the source from Kolosy
(http://www.kolosy.com/wordpress/?p=8 ), we have continued the
journey and successully ported Rsync to C# (protocol 28 ). So far,
the program has the following features:
[/quote]
Sounds great...

[quote]1. Lots of features just like Rsync, supporting protocol up to 28.
[/quote]Is it fully compatible with rsync as far as BackupPC can see?
i.e. will I notice any differences and will the pool checksum and
digests be consistent?

Can it tunnel over ssh?

[quote]2. No need for cygwin. However, it's required .NET framework version 3.5
3. Utilise Volume Shadow Copy Service (aka VSS, on XP machines only) so that now it will do the work on shadow copy (configurable parameter on config file) and copy even opened files, exchange files, SQL files, etc.
[/quote]
Will it work on XP Home or only on XP Pro?

Thanks

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Native Window version of rsync
December 18, 2008 03:06PM
Hi,

Is there any update on the release of this software ?

Thanks.
Native Window version of rsync
April 20, 2009 04:12AM
Hi,

I would be interested in testing this application.

thanks

regards

alex
Native Window version of rsync
April 20, 2009 07:10PM
which program exactly?

On Mon, Apr 20, 2009 at 5:12 AM, alexint <backuppc-forum < at > backupcentral.com ([email]backuppc-forum < at > backupcentral.com[/email])> wrote:
[quote]
Hi,

I would be interested in testing this application.

thanks

regards

alex

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[/quote]
Native Window version of rsync
April 20, 2009 11:24PM
Hi,

The C# port of Rsync, I would love the source code if possible, or to help the development, I have many years programming experience and I am currently working on an Internet backup solution that currently uses Xdelta to create and roll patches of very large files (>50gb) and using Rsync type updating maybe better in some situations.

Regards

Alex

[quote]which program exactly?

On Mon, Apr 20, 2009 at 5:12 AM, alexint <backuppc-forum < at > backupcentral.com ([email]backuppc-forum < at > backupcentral.com[/email])> wrote:
[quote]
Hi,

I would be interested in testing this application.

thanks

regards

alex

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[/quote][/quote]
Native Window version of rsync
April 21, 2009 02:51AM
This is related to an old post where in someone wrote a native windows version of rsync using .net. After that he never released it to public probably because of confusion on licensing.

Thanks and Regards,
Anand Gupta

-------- Original Message --------
Subject: Re: [BackupPC-users] Native Window version of rsync
From: dan <dandenson < at > gmail.com> ([email]dandenson < at > gmail.com[/email])
To: backuppc-users < at > lists.sourceforge.net ([email]backuppc-users < at > lists.sourceforge.net[/email])
Date: Tue Apr 21 07:33:43 2009
[quote]which program exactly?

On Mon, Apr 20, 2009 at 5:12 AM, alexint <backuppc-forum < at > backupcentral.com ([email]backuppc-forum < at > backupcentral.com[/email])> wrote:
[quote]
Hi,

I would be interested in testing this application.

thanks

regards

alex

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[/quote] [/quote]
Native Window version of rsync
April 21, 2009 05:21AM
Thanks for the info.

[quote]This is related to an old post where in someone wrote a native windows version of rsync using .net. After that he never released it to public probably because of confusion on licensing.

Thanks and Regards,
Anand Gupta

-------- Original Message --------
Subject: Re: [BackupPC-users] Native Window version of rsync
From: dan <dandenson < at > gmail.com> ([email]dandenson < at > gmail.com[/email])
To: backuppc-users < at > lists.sourceforge.net ([email]backuppc-users < at > lists.sourceforge.net[/email])
Date: Tue Apr 21 07:33:43 2009
[quote]which program exactly?

On Mon, Apr 20, 2009 at 5:12 AM, alexint <backuppc-forum < at > backupcentral.com ([email]backuppc-forum < at > backupcentral.com[/email])> wrote:
[quote]
Hi,

I would be interested in testing this application.

thanks

regards

alex

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[/quote] [/quote][/quote]
Native Window version of rsync
April 21, 2009 07:52AM
A native version? That is really too bad. Especially if it overcame
some if the issues of rsync on windows, and the cygwin requirements,
etc.

D
[quote]
anandx wrote:
[quote]This is related to an old post where in someone wrote a native
windows version of rsync using .net. After that he never released
it to public probably because of confusion on licensing.

Thanks and Regards,
Anand Gupta

-------- Original Message --------
Subject: Re: [BackupPC-users] Native Window version of rsync
From: dan <dandenson < at > gmail.com> (dandenson < at > gmail.com)
To: backuppc-users < at > lists.sourceforge.net (backuppc-users <
at > lists.sourceforge.net)
Date: Tue Apr 21 07:33:43 2009

[quote]which program exactly?

On Mon, Apr 20, 2009 at 5:12 AM, alexint <backuppc-forum < at >
backupcentral.com (backuppc-forum < at > backupcentral.com)> wrote:

[quote]
Hi,

I would be interested in testing this application.

thanks

regards

alex

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[/quote]
[/quote]

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