rsync - Dec 2001 - --size-only ?

-I, --size-only
               Normally rsync will skip any files that are already the
               same length and have the same time-stamp. With the --
               size-only option files will be skipped if they have the
               same size, regardless of timestamp. This is useful when
               starting to use rsync after using another mirroring
               system which may not preserve timestamps exactly.

Excuse me for my ignorance but is this flag referring to the files with
same filename on source and destination ? If the destination file has
the same size as that of one on source but a different name, would it
still skip it ?

I need to skip a file if the file on destination has the same name and
same size as that of source.

Thanks
Nishi

On 17 Dec 2001, "Kapoor, Nishikant X"
<Nishikant.X.Kapoor@xcelenergy.com> wrote:
> Excuse me for my ignorance but is this flag referring to the files with
> same filename on source and destination ? If the destination file has
> the same size as that of one on source but a different name, would it
> still skip it ?
At the moment rsync only compares files having the same path relative
to whatever base directory, unless you specifically nominate exactly
two files.
> I need to skip a file if the file on destination has the same name and
> same size as that of source.
How would it know which file is the relevant one?

If the changes are systematic, you might be able to run a pre or
post-processing script to move the files to the same name, then do the
transfer.

Alternatively, have your script run rsync only on the files that need
to be transferred.

-- 
Martin

> On 17 Dec 2001, "Kapoor, Nishikant X"
> <Nishikant.X.Kapoor@xcelenergy.com> wrote:
> 
> > I need to skip a file if the file on destination has the same name
> and
> > same size as that of source.
> 
> How would it know which file is the relevant one?
> 
> If the changes are systematic, you might be able to run a pre or
> post-processing script to move the files to the same name, then do the
> transfer.
> 
> Alternatively, have your script run rsync only on the files that need
> to be transferred.
	[Kapoor, Nishikant]  I have a remote source that generates a
datafile with a new filename every hour but as it happens, misses a few
during the day. I fetch these files through 'ftp' and distribute to my
clients using 'rsync'. My clients would like to receive these data files
iff they have not received them before i.e. these have a different
filename or else they lose the original datetime stamp of these files
(the files get a new stamp every time I fetch them from remote source).
This is what I was hoping to use --size-only option for.

	Thanks
	Nishi