rsync - Aug 2006 - Newbie: What does -e do?

Hi

Just starting out, and have read through the man and several web page
tutorials, and I don?t quite understand some of the options (guess I?ll ask
about those as I get to them).

The first I see pretty often is ?e. Can someone explain what this does?

Thanks :)

All My Best,
Jeffrey

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On Sat, 2006-08-05 15:36:57 -0700, Jeffrey Ellis <jellis@dhnet.us>
wrote:
> The first I see pretty often is ?e. Can someone explain what this does?
rsync can be used in conjunction with several transport protocols. In
one incarnation, you can tell rsync about a command (supplied with the
-e command line option) that'll execute a given command (that'll be
supplied on the command line) on a remote host.

The usual usage is to tell rsync to use ssh so shift all the data over
the internet. That way, you can strongly authenticate the remote host
(so that simple IP spoofing won't give an attacker all of your backup)
as well as encrypt all the traffic.

MfG, JBG

-- 
       Jan-Benedict Glaw       jbglaw@lug-owl.de                +49-172-7608481
Signature of:                  Tr?ume nicht von Dein Leben: Lebe Deinen Traum!
the second  :
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Hi,

On Sat, 5 Aug 2006, Jeffrey Ellis wrote:
> Just starting out, and have read through the man and several web page
> tutorials, and I don?t quite understand some of the options (guess I?ll ask
> about those as I get to them).
>
> The first I see pretty often is ?e. Can someone explain what this does?
lxi001:26 01:06:14 ~ # man rsync | grep "\-e, "
         -e, --rsh=COMMAND           specify the remote shell
lxi001:26 01:06:26 ~ #

Cheers -e
-- 
Eberhard Moenkeberg (emoenke@gwdg.de, em@kki.org)

on 8/6/06 5:00 AM, rsync-request@lists.samba.org at
rsync-request@lists.samba.org wrote:
>>> > > rsync can be used in conjunction with several transport
protocols. In
>>> > > one incarnation, you can tell rsync about a command
(supplied with the
>>> > > -e command line option) that'll execute a given
command (that'll be
>>> > > supplied on the command line) on a remote host.
>>> > > 
>>> > > The usual usage is to tell rsync to use ssh so shift all
the data over
>>> > > the internet. That way, you can strongly authenticate the
remote host
>>> > > (so that simple IP spoofing won't give an attacker
all of your backup)
>>> > > as well as encrypt all the traffic.
>> > 
>> > time sudo rsync -a -v -e ssh "/Volumes/Firewire\ 600"
/Volumes/Firewire\
>> > 250a --eahfs --showtogo --update
>> > 
>> > In this, I don't understand any of the options after the two
volumes, with
>> > the exception of --update. Can you explain what all this means?
> 
> --eahfs isn't available in my version of rsync, but Googling for it
> reveals that it's an extension used on MacOS to backup "resources
and
> metadata" (cf. http://hardware.mcse.ms/message191839.html).
> 
> --showtogo as well isn't supported by my rsync version, but Google
> tells that it's probably used to get some "remaining files to be
> synchronized" estimation of some sort, cf.
> http://www.goland.org/rsync/ .
> 
>> > This script was generated using RsyncX. I bring that up because,
hfs looks
>> > suspiciously like the Mac OS X File System.
> 
> :)
> 
> So either don't use the HFS+ extension (--showtogo seems to only be
> eye-candy) and backup only the pure data (loosing some metadata), or
> search for the patches adding the --eahfs code and recompile (or
> install prepared binaries if available.)
> 
> MfG, JBG
> 
> 
> Hi, Jan--
> 
> Thanks again for the information. I was wondering why they weren?t in man
:)
> 
> All My Best,
> Jeffrey
> 

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