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Hi..

I need a script to transfer many backup files(in tar format) from one server to another server and set a weekly cron job..
The thing is that, when the second time it is updated, only the changed files need to be updated and the rest remains unchanged.


thanks in advance

Hello harithahv! The command you're looking for is 'rsync'

It will automatically only copy files that have changed. A simple cron job for rsync would look something like this:



This will synchronize a directory called /backups/ with a /backups/ directory on a remote server every Sunday morning at 12AM.

The trailing slashes are important, I learned that the hard way. I'd encourage you to check out the man page on rsync to see all the options that are available. For general purpose synchronization I like to use the -a flag. You can also use --delete-after to remove any files on the remote server that have also been removed form the local client.

I hope this helps!