Re: taking advantage of filles in folder other than destination

Thanks paul,

but the requirement is to upload to the backup server (from database
server),

"rsync -a --compare-dest=../$YESTERDAYS_BACKUP $TODAY $REMOTESOURCE
#change the src and dest"

this command does not seem to work for me !! I mean that the whole file is
getting transferred !

Any thoughts on this ?

Thanks again,
rssrik






Paul Slootman-5 wrote:
>
> On Mon 05 May 2008, rssrik wrote:
>
>> Suppose,
>>
>> 1. I have taken yesterdays dump in a folder named 04-05-08 in database
>> server
>> 2. I have rsynced the folder 04-05-08 to the backup server.
>> 3. I have taken today's dump in folder named 05-05-08 in database server.
>> 4. Now while doing rsync, I want rsync to compare the <database server's
>> 05-05-08/dump file> with the <04-05-08/dump file> which already exists
>> in
>> backup server. (then eventually, I want rsync to send only the
>> differences
>> and store the output in folder 05-05-08).
>>
>> Typicaly I want to take advantage of yesterday's file which already
>> present
>> in a different folder.
>>
>> Can anyone suggest a working method to implement this ? (I tried
>> --copy-dest
>> / --compare-dest .. but couldnt get it to work)
>
> Something like this should work...
>
> BASE=/backup/psql # edit for your situation
> REMOTESOURCE=dbhost::psqldumps/ # again, edit
> TODAY=`date +%d-%m-%y` # I prefer %Y-%m-%d, sorts better
> cd $BASE
> YESTERDAYS_BACKUP=`ls -td ??-??-?? | head -n 1`
> rsync -a --compare-dest=../$YESTERDAYS_BACKUP $REMOTESOURCE $TODAY/
>
>
> Paul Slootman
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