rsync: future of the --server option

tim.conway at tim.conway at
Fri Jan 25 10:40:02 EST 2002

Hehe... gotcha.  --server and --sender are undocumented because they are 
commands used by the initiating rsync to cause the called rsync behave as 
a slave.  --daemon IS documented well enough, though it's meaningless 
unless you also read the (also very good) rsyncd.conf documentation.

The message you were reading was about a special application, not normal 

Tim Conway
tim.conway at
Philips Semiconductor - Longmont TC
1880 Industrial Circle, Suite D
Longmont, CO 80501
Available via SameTime Connect within Philips, n9hmg on AIM
perl -e 'print pack(nnnnnnnnnnnn, 
".\n" '
"There are some who call me.... Tim?"

"Martin A. Brown" <mabrown at>
Sent by: rsync-admin at
01/24/2002 02:33 PM

        To:     rsync at
        cc:     (bcc: Tim Conway/LMT/SC/PHILIPS)
        Subject:        rsync: future of the --server option

Hello list members,

I notice here that the --server option is listed as undocumented.


My question is that the --server option is not documented, and I'd like
not to build functionality into one of my systems without trusting that it
will be there in the future.

I was able to find the --server option simply by watching the rsync
entries in the process table when I did not use the command restrictions
for the DSA key.  I, however, would very much like to use belt and
suspenders:  I would like to restrict access to this DSA key and also
restrict this DSA key to this individual rsync command.

I have been able to make rsync do my bidding by's a snippet
of my .ssh/authorized_keys2 file:

command="/usr/bin/rsync --quiet --delete --links --perms --recursive \
   --server /home/mabrown/miccawillow/" ssh-dss AAAA....

For now, I'm happy to continue using the version of rsync I am using
(rsync-2.4.6) as I have been very happy with it.  I would like to know
what the development plan includes for the undocumented --server option
(and the --sender option, too I guess).

Thanks for a great product.


Martin A. Brown --- SecurePipe, Inc. --- mabrown at

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