rsync question -

[Bob Goodwin - Zuni, Virginia, USA]

On 15/11/13 12:53, Rick Stevens wrote:
>
> No, you're not misunderstanding it. rsync looks at the source and
> target and if there are differences, it copies from the source to the
> target. In your case, you told rsync to copy everything inside the
> /mnt/HOME1/bob/TBdBx07 directory (the source) to the
> /home/bobg/.thunderbird directory (the target). If there are differences
> between those two directories, rsync will try to make the target look
> like the source as much as possible. Unless you add the "-u" option,
> rsync will even overwrite files on the target that are "newer" than
> those on the source.
>
> The "-a" option to rsync tells it to try to do an archive (keep all
> attributes, recurse down directories, etc.) and the "-z" means
> "compress data during the transfer" (sorta silly when everything's on
> the same LAN...it's more intended for WAN use). You probably wanted
> "-avu --ignore-existing" to keep rsync from overwriting existing files
> on the target (rsync will only copy over files that do NOT exist on the
> target).
>
> rsync is a very powerful tool, but as with all powerful tools, one
> can easily injure oneself. Use adequate safety equipment and read the
> manual! :-) 

Ok that appears to have done what I wanted, at least it transferred a 
lot less data in very little time. I  thank you for the clear 
explanation. I have trouble understanding the man pages but on a good 
day I do answer my own questions.

Thanks,

Bob

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