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Date: Thu, 15 Mar 2012 18:44:00 -0000
From: Christopher Faylor <cgf-use-the-mailinglist-please@cygwin.com>
To: cygwin-talk@cygwin.com
Subject: Re: MS recommends Cygwin
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On Thu, Mar 15, 2012 at 06:47:40AM -0600, Warren Young wrote:
>On 3/15/2012 5:42 AM, Andy Koppe wrote:
>> http://technet.microsoft.com/en-us/library/hh831568.aspx
>>
>> "Features Removed or Deprecated in Windows Server "8" Beta
>> ...
>> The Subsystem for UNIX-based Applications (SUA) is deprecated. If you
>> use the SUA POSIX subsystem with this release, use Hyper-V to
>> virtualize the server. If you use the tools provided by SUA, switch to
>> Cygwin or Mingw."
>
>Ding dong, the witch is dead?

But I heard that SUA does fork correctly.  Maybe it uses copy-on-right.
Cygwin should see if it could do the same thing.