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From: Andrew Schulman <schulman DOT andrew AT epamail DOT epa DOT gov>
Subject: Re: Doubtful about unison
Date: Mon, 28 Feb 2011 12:35:53 -0500
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> > Try `cygcheck /usr/bin/unison-2.32`.
> 
> Now I get:
> C:\cygwin/bin\unison-2.32.exe
>    C:\cygwin/bin\cygwin1.dll
>      C:\WINDOWS\system32\ADVAPI32.DLL
>        C:\WINDOWS\system32\KERNEL32.dll
>          C:\WINDOWS\system32\ntdll.dll
>        C:\WINDOWS\system32\RPCRT4.dll
>          C:\WINDOWS\system32\Secur32.dll
>    C:\cygwin/bin\cyggcc_s-1.dll
> All of these files exist.

Hm.  Okay, what if you run `strace /usr/bin/unison-2.32 -version`?  When I
do that, around line 375 of the output I see

 6657   90249 [main] unison-2.32 5424 fhandler_base::write: binary write
unison version 2.32.52

I'm not very knowledgeable about strace output, but if you attach yours
here I can look for problems and compare it to mine.

Also, from setup.exe, what version of unison2.32 are you using?  Is it
2.32.52-3?  There were earlier some versions of Unison that were briefly
released that were broken in a way that I think looked like this.

> > /usr/bin/unison should be just a symlink to /etc/alternatives/unison,
>  > which in turn is a symlink to one of your installed versions of unison.
> 
> Yes indeed. And for extra fun there's also /bin/unison.

Well that's different, it's a bonus Cygwin mount point :)

> Symlinks are much abused in Unix: everything lives in 3,
> 4, 5 different places.

Arguably, yes.  In this case the symlinks are there to help you manage
multiple conflicting versions of Unison - see
/usr/share/doc/unison/README.Cygwin.

Andrew.


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