backup script

kristof_v · 10-10-2006, 10:13 AM

hi

i would like to make a backup script that finds out the differences between the source and destination and only copies the new/modified files from source to destination.

can anyone help me on this one or does anyone already have such a neat script?

grtz

BCarey · 10-10-2006, 10:31 AM

You want rsync. Type man rsync for a description and examples.

kristof_v · 10-11-2006, 03:16 AM

ok 1 more question though:

if you do: rsync -a /src /dest
will rsync check which files are new/modified and only copy that files?
or will it just overwrite the existing files?

grtz

BCarey · 10-11-2006, 08:52 AM

from the man page:

Quote:

The rsync remote-update protocol allows rsync to transfer just the differences between two
sets of files across the network connection, using an efficient checksum-search algorithm
described in the technical report that accompanies this package.

You should also check out the -z option which compresses the files if you are doing remote backups.

Brian

kristof_v · 10-11-2006, 11:52 AM

thx!

a quick look at the man page cleared up a lot indeed