using rsync with ssh to distribute to multiple hosts

Eric Whiting ewhiting at
Fri Sep 5 02:11:23 EST 2003

2 things to do that will fix things...

1. Read man ssh and create public/private ssh keys with an empty passphrase.
This will let the rsync run without a password -- you can cron it and it will
just work... You can also use .rhosts and sync over rsh, but ssh with the keys
is a better solution.

2. Consider the destination syncs in parallel. Use simple bash for loops with &
in the commands or use perl's Parallel::ForkManager to run several at once..  I
have used both methods with good success.


Jim Stafki wrote:
> Hello,
> I have tried to look this up in the archives before posting but I can not
> connect to the news server at gmane.  I hope you can help, or perhaps point
> me to documentation somewhere...
> I have a filesystem on an aix box that must be pushed periodically to
> several unix boxes (over 100) and the directive from our unix admins is to
> use rsync, which can use ssh to perform the transfer.  I would like some
> opinions about the best way this should be done.  I have written a korn
> shell script that uses a loop to execute the rsync command against a list of
> hostnames.  This works fine, but for one inconvenience:  The user must enter
> the password for every box that is in the list.  It is the same password in
> most cases, but this is simply not acceptable.
> Is there a better way to do this with rsync?  Anyone have thoughts about
> this?
> Thanks
> Jim
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