Subversion post-commit script to update working-copy

Question

Hi,

Im having issues with a simple post-commit script. The goal is to update a different working-copy if a special keyword is present in the commit message:

The script im using for testing is:

#!/bin/bash 
REPO="$1" 
REV="$2" 

TEST_SERVER="localhost" 
PROD_SERVER="172.16.16.1" 

# Check for a deployment signal 
if ( svnlook log -r $REV $REPO | grep "~~DEPLOY~~" ) 
then 

/usr/bin/svn update /users/luismartins/sites/MDF-live 

fi

For some reason the IF condition im checking does nothing when i commit with the ~~DEPLOY~~ keyword present in the commit comments. When i run the script trough text-wrangler i get svnlook error related to the lack of arguments, but thats because its running outside of a subversion commit i believe.

Am i doing anything wrong here?

Thanks.