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Date:      Wed, 07 May 2003 15:00:31 -0400
From:      Bill Moran <wmoran@potentialtech.com>
To:        Chris Pressey <cpressey@catseye.mb.ca>
Cc:        questions@freebsd.org
Subject:   Re: Realtime Filesystem Replication
Message-ID:  <3EB957CF.2000306@potentialtech.com>
In-Reply-To: <20030507125813.04653d0e.cpressey@catseye.mb.ca>
References:  <Pine.BSF.4.21.0305061221200.47177-100000@server1.ultratrends.com> <32BFB2DB-80B2-11D7-9502-003065ABFD92@mac.com> <20030507125813.04653d0e.cpressey@catseye.mb.ca>

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hris Pressey wrote:
> On Wed, 7 May 2003 13:34:47 -0400
> Charles Swiger <cswiger@mac.com> wrote:
> 
> 
>>On Tuesday, May 6, 2003, at 03:22 PM, YOU wrote:
>>
>>>Thanks so far to the suggestions including rsync and unison. Both 
>>>appear
>>>to be triggered upon a command line or user typed command. Is
>>>someone using a system that tracks the mtimes for files and updates
>>>without prompt?
>>
>>Sure.  Whatever causes updates has to keep track and push out it's 
>>changes t the things which might be interested.  Take a look at the
>>way funnel newsfeeds work under INN.
>>
> 
> But is there a way to do this without being the thing that causes the
> updates?  For example it might be 'cat > foo.txt' that causes the
> update.  Without rewriting 'cat' and essentially every other program, of
> course - I gather the only way to do this would be at the filesystem
> level.

Obviously this can be done via kqueue.  See the wait_on port.

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com



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