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

[Jeff Lightner]

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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