[TriLUG] Issuing a command to multiple machines simultaneously

[Maarten Lippmann]

create a shell script with a for loop:

something like


-----------

#!/bin/bash

systemHostNames=( sysa sysb sysc )
for name in ${systemHostNames[@]}
do
    ssh $name 'command here'
done

---------

i often do this type of thing by hand in bash when I need to iterate
through ip adresses:

for ((i=101;i=150;i++)) do
ssh 192.168.0.$i 'cat /var/log/blahblah'
done

(might be a spelling error


On Tue, Jun 3, 2008 at 2:20 PM, Paul McLanahan <pmclanahan at gmail.com> wrote:
> Hi All,
>
> I manage a few Linux boxen at $work. They're not all exactly alike,
> but the are all running Ubuntu Hardy Server, and quite often I have to
> issue the same command to all of them to do things like package
> upgrades, installs, etc.. I'd like to setup a system that will allow
> me to issue the command in a client of some type, which will cause the
> command to run of all of the machines, and send the output back to me.
> I've seen this done in the past, but I can not seem find how it was
> done, and my googling has turned up a couple of rsh tutorials, but
> unless I'm missing something, just rsh isn't going to get this done.
>
> Thanks for any advice,
>
> Paul McLanahan
> --
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