ssh remote command

[nmeyers at javalinux.net (nmeyers at javalinux.net)]

On Wed, Oct 25, 2006 at 11:31:17AM -0400, Paul Baumgardner wrote:
> I'm trying to slurp some data out of a log file via ssh and I'm
> getting different results from ssh and doing it on the localhost.
> Both results are fine, though I'm curious as to why the output via ssh
> is different.

In the ssh case, the $2 is inside double-quotes, so it's being
interpolated by your shell on server1 - probably as an empty string,
so the awk command you're sending is {print  }. You could escape the $,
or switch quote style in the middle, like this:

  ssh server2 "grep 'ORA-' /var/log/core.log | awk '{print "'$2'"}' | sort | uniq -c | sort -rn"

What I'm doing is ending the double-quote, starting a single-quote,
then ending that and returning to double-quote.

That's three quotes. In the words of Groucho Marx: "add one more and
you'll have a gallon."

Nathan

> 
> 
> [paul at server1 ~]$ ssh server2 "grep 'ORA-' /var/log/core.log | awk
> '{print $2}' | sort | uniq -c | sort -rn"
>     26 java.sql.SQLException: ORA-00001: unique constraint
> (SPRINT_CAMPAIGN.MO_C_USER_INTEREST_ENTRY_1) violated
>     18 java.sql.SQLException: ORA-00001: unique constraint
> (SPRINT_CAMPAIGN.MO_C_USER_INFO_1) violated [newbury at monitor ~]$
> 
> On the local host:
> 
> [paul at server2 ~]$ sudo grep 'ORA-' /var/log/core.log | awk '{print
> $2}' | sort | uniq -c | sort -rn
>     44 ORA-00001:
> [paulr at server2 ~]
> 
> Anyone have any ideas?  Is it something to do with the quotes in the
> command over ssh?
> 
> Thanks,
> Paul
> 
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