[BALU] Bash Script ssh to server from list file

Todd Morgan bamamorgans at gmail.com
Thu Apr 7 16:19:47 CDT 2011


Woot woot!!!! I see that the single ticks are very specific. I tried them as
' ' and of course it failed. ` is the key.

Thanks!

On Thu, Apr 7, 2011 at 3:58 PM, Walker Haddock <whaddock at mac.com> wrote:

> See below ...
>
> On Apr 7, 2011, at 3:40 PM, Todd Morgan wrote:
>
> > So I'm finishing up a bash script wrote that will ultimately loop through
> some code which includes a few ssh commands. The hostnames of the boxes I'm
> logging into are in a server_list file. For some reason the script will run
> for the first name in the list but quit after that. Here's what I've tried.
> >
> > version 1 - Will only work for the first entry in the $SERVER_LIST file
> >
> > while read SERVER
> > do
> > OTHER_VAR=new-$SERVER (not particularly important to the issue, but I
> thought I would include it)
> > ssh $SERVER exec $some_command1
> > ssh $SERVER exec $some_command2
> > ssh $SERVER exec $some_command3
> > done < $SERVER_LIST
> > --------
> > Version 2 - same results as #1
> >
> > cat $SERVER_LIST |
> >
> > while read SERVER
> > do
> > OTHER_VAR=new-$SERVER (not particularly important to the issue, but I
> thought I would include it)
> > ssh $SERVER exec $some_command1
> > ssh $SERVER exec $some_command2
> > ssh $SERVER exec $some_command3
> > done
> > -------
> > version 3 - this one failed miserably
> >
> > for SERVER in $SERVER_LIST
> s.b
>   for SERVER in `cat $SERVER_LIST`
> > do
> > OTHER_VAR=new-$SERVER (not particularly important to the issue, but I
> thought I would include it)
> > ssh $SERVER exec $some_command1
> > ssh $SERVER exec $some_command2
> > ssh $SERVER exec $some_command3
> > done
> > ------
> >
> > Don't know if this is particularly relevant, but the $some_command
> variables are defined outside of the loop, but modified slightly inside the
> while statement.
> >
> > If I do a VERY basic while loop with echo's I'm fine
> >
> > while read SERVER
> > do
> > echo $SERVER
> > $SERVER='diff-name'
> > echo $SERVER
> > done < $SERVER_LIST
> >
> > It iterates through the loop echos out what you'd expect. Any help you
> can provide would be appreciated. Thanks
> >
> > --
> > Todd Morgan
> > Birmingham, AL
> > _______________________________________________
> > Members mailing list
> > Members at lists.bham-lug.org
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>
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-- 
Todd Morgan
Birmingham, AL
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