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From: Andrew Schulman <schulman DOT andrew AT epamail DOT epa DOT gov>
Subject:  Re: Can unison syncronize permission bits
Date:  Tue, 10 Feb 2009 15:28:24 -0500
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> > Before complaining that unison does not syncronize the permission bits
> > between my C: drive and my USB drive, I would like to ask if it should
> > be able to do it?
> >  
> > I have searched a lot, and found various indicators that it should be
> > able, but also that it will not do it on "windows" systems.
> 
> I think part of the answer lies in the file systems in question.  Sorry I
> don't have more to add at the moment.

Right.  Yes, Unison can synchronize permission bits in Cygwin-- see the -perms
preference.  However, this will only work if the underlying file system supports
it.  In particular, it won't work in Win9x, which doesn't support file
permissions, or on a FAT file system (in either Windows or Linux), which also
has no permissions.  It should work fine on NTFS, subject to the limits of
Cygwin's Unix permissions model-- see e.g.
http://cygwin.com/cygwin-ug-net/highlights.html#ov-hi-perm.

Andrew.


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