Secure file transfers

[Erik Norgaard]

Gregor Mosheh wrote:
> I had a similar, perhaps related question. I'm making
> backups via tar to a SMB server, but I would rather
> use sftp/scp for it (the NAS supports both SMB and
> scp/sftp).
> 
> I don't have enough disk space to make the backup to a
> tarchive and then scp that tarchive. Is there a way to
> make scp/sftp read from a pipe or stdin, rather than
> specific filenames? The docs haven't mentioned it, but
> since the subject came up I thought it worth asking...

You can tunnel rsync through ssh, this way you only transfer changes, 
you transfer changes in a secure fassion, and you don't need diskspace 
to create a backup file that is then transfered, I use:

/usr/local/bin/rsync -Cuvaz --rsh="ssh" /path/to/src/ \
    <myuser>@<myserver>:/path/to/dst

The only, but really anoying, problem about rsync is that /path/to/src/ 
is not treated as /path/to/src - the above does what you expect: mirror 
all in src to dst.

So, while you try figuring out the /'s rsync to an empty dir, then you 
can easily delete.

Cheers, Erik


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