ubuntu backup

[Shantanu Joshi]

Derek Broughton <derek at pointerstop.ca> writes:

> Siggy Brentrup wrote:
>
>> On Wed, Sep 23, 2009 at 17:44 -0400, Tim Tebbit wrote:
>>> freeburn wrote:
>>> > what is the best backup solution for ubuntu?
>>> tar, rsync, rdiff-backup and or a combination of each.
>> 
>> I've been recently pointed to unison, sort of modern
>> replacement for rsync with improvements in efficiency.
>> 
>
> Unison is certainly not a _replacement_ for rsync, and can't possibly have 
> "improvements in efficiency" - at least in the actual backup - it's a front-
> end for rsync!  That said, most people I know who use it, love it.

It's more than just a frontend. Both Unison and the rsync utility use
the rsync algorithm developed by Andrew Tridgell, but Unison is smarter
about how it handles changes in both source and destination. It can
propagate changes both ways if needed, which rsync needs to be told
which is the 'correct' version.