[ale] Using locally defined variable in ssh command line to remote host?

[Jerald Sheets]

Is using expect and funneling your commands through an Expect script an
option?

--j

On Thu, Apr 9, 2009 at 12:56 PM, Jeff Lightner <jlightner at water.com> wrote:

> Yes.  Because when I use the double quotes it tries to list the files on
> the local host rather than the remote one so results in:
>
> ls: /felix/preprod/jboss/server/default/log/log/webserver.log*: No such
> file or directory
>
> As I said I've tried various quoting, escaping, eval methods.  The issue
> is they all make it either pass the variable (not its value) to the
> other side so it doesn't know the value or they evaluate parts of the
> command locally where they have no relevance.
>
> It just seems really odd to me that ssh doesn't have something built in
> that would allow it to process a locally defined variable on the remote
> side.  I see many have asked the question but didn't see any obvious
> solution.
>
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of JK
> Sent: Thursday, April 09, 2009 12:20 PM
> To: Atlanta Linux Enthusiasts - Yes! We run Linux!
> Subject: Re: [ale] Using locally defined variable in ssh command line to
> remote host?
>
> Jeff Lightner wrote:
> > Question:
> >
> > How can I create a variable in a script such that defining it on
> > originating host allows me to feed it its value into the ssh command
> > line on remote host?
> >
> >
> >
> > Details:
> >
> > I'm trying to do something like this:
> >
> >
> >
> > #!bin/bash
> >
> > REMSERVER=billybob
> >
> > REMLOGDIR=/felix/preprod/jboss/server/default/log
> >
> >
> >
> > ssh $REMSERVER 'sh -c "ls -tr  ${REMLOGDIR}/webserver.log* |xargs grep
>
> > -hA 10 DEBUG"'
>
>
> Hmmm.  Problem is, your variable is inside a single-quoted string, so it
> isn't getting expanded on the local host.  Is there a specific reason
> you're not just saying
>
> ssh $REMSERVER "ls -tr  ${REMLOGDIR}/webserver.log* |xargs grep
> -hA 10 DEBUG"
>
> ?
>
>
> -- JK
>
> --
> A closed mouth gathers no feet.
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-- 
---
Jerald M. Sheets jr.
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