How to 'rsync' from one computer to another

[JD Austin]

As far as I know you cannot preserve write permissions writing to a DVD
unless you pack those permissions within an archive format that can store
them.  It's not a writable media.
Unless you're transferring terabytes of changes rsync works well across the
internet to keep files in sync.  Get them relatively in sync and then let
rsync finish the job.

Write to an external drive formatted with a linux file system instead if you
want to be able to preserve read/write/group permissions without archiving
the files first.


On Wed, Feb 3, 2010 at 2:30 PM, Eric Shubert <ejs at shubes.net> wrote:

> I think the objective here is to copy the files directly from one drive
> to the other. No intermediate files or tarball required. ;)
> You could use tar on both sides w/out ever having the tarball directly
> on a disk by piping it through ssh. I think rsync's the best solution
> though, given that he only wants to transfer files that have changed.
>
> JD Austin wrote:
> > Instead of writing all of the files to the disk make a tar ball and
> > write that to the disk.
> > tar zcpvf tarball.tar.gz /sourcedir
> >
> > On Wed, Feb 3, 2010 at 1:55 PM, Eric Shubert <ejs at shubes.net
> > <mailto:ejs at shubes.net>> wrote:
> >
> >     joe at actionline.com <mailto:joe at actionline.com> wrote:
> >      > What is the procedure and syntax to 'rsync' all of a specific set
> of
> >      > directories and files from one computer to another that are on
> >     the same
> >      > network?
> >      >
> >      > I have been burning DVDs on one computer and copying those files
> >     onto my
> >      > other computer(s), but when I download all those files, the
> >     permissions
> >      > are all changed to be non-writeable files and directories.
> >      >
> >      > -r--r--r--  1 root root   9598 Feb  2 15:18 filenames
> >      > dr-xr-xr-x  5 root root   6144 Feb  2 21:06 directory-names
> >
> >     The files are not writable on the DVD, so when the DVD is copied to
> the
> >     HD, they remain not writable.
> >
> >      > Is there some way to globally fix that?
> >
> >     The chmod command has an -R option. Otherwise, normal file name
> pattern
> >     matching applies.
> >
> >      > Or would 'rsync' be a better solution?
> >      >
> >      > I've never used 'rsync' and after reading the 'man' pages, I'm
> still
> >      > confused.
> >
> >     There are examples in the rsync man page. What specifically do you
> not
> >     understand?
> >
> >     We can't really give you the command you'd need to use without
> knowing
> >     more specifics about the set of directories and machines (ip
> addresses?)
> >     you're dealing with.
> >
> >      > Is there a way to do this to preserve the file dates
> >
> >     There is a -p flag for the cp and scp commands which does this.
> >
> >      > and only copy those
> >      > files that are newer (have more recent dates) onto the target
> system?
> >
> >     You'll need to use rsync for this part.
> >
> >     --
> >     -Eric 'shubes'
> >
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> >
>
>
> --
> -Eric 'shubes'
>
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