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Re: [Nmh-workers] Sharing MH files across computers

From: bergman
Subject: Re: [Nmh-workers] Sharing MH files across computers
Date: Thu, 01 Sep 2016 18:09:49 -0400

In the message dated: Thu, 01 Sep 2016 22:41:21 +0100,
The pithy ruminations from Conrad Hughes on 
<Re: [Nmh-workers] Sharing MH files across computers> were:
=> Hi Thomas,
=> Thomas> I want to access the same mails from both my laptop computer and my
=> Thomas> desktop computer.
=> I've been doing this for a decade or two, among three computers for much
=> of that time: home desktop, work desktop and laptop.  I use unison for
=> syncing between hosts: it's much safer than rsync since it's
=> bidirectional.  However, that's still not good enough when both sides


=> I like your modulus idea, though it would run into difficulty with
=> folder -pack I think; another idea would be for emails to have a
=> deterministic filename that couldn't change (e.g. a hash — though I note
=> that "Replied:" annotations would cause trouble here), but scan etc.
=> would assign virtual numbers to them by some means so you could still
=> refer to 1, 2, etc. rather than a 20-digit hash :-/  Sounds as if it
=> might get awkward though.
=> Would be interested to hear if anyone has tried other approaches.

This was my thought experiment, but I haven't actually written the code:



Today, I'd seriously look into keeping the mailstore on a cloud service
that offers persistent host-side caching, such as dropbox. That'll give
you the 'synchronization' by having the definitive copy in the cloud,
and it'll enable clients to function off-line. Since your use case, and
mine, is for a single person running nmh on multiple machines, there's
almost no chance of simultaneous changes. If it takes a little while
(seconds, maybe single-digit minutes) for the cloud service to sync
from the active machine, where I'm at the keyboard and running 'inc'
to the other clients, the delay isn't a problem.



=> Conrad
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Mark Bergman    Biker, Rock Climber, SCUBA Diver, Unix mechanic, IATSE #1 
'94 Yamaha GTS1000A^2                                         2015 Aprilia 
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