Execute Script/Batch file does not really execute

Hi all,

I have an issue with the Install Anywhere 2011. The Install Anywhere script has an action to execute a command to change the owner of a particular directory of PostgreSQL. The Execute Script/Batch file action is been used to perform this. In the Script field of the action have provided some thing like this
chown -vR test /opt/postgres/data.
But this script does not seems to be executing.
I am Using the 64bit Linux OS and 64bit JVM bundled with the Installanywhere.

Has anybody seen this issue before?

With Regards,
Sathya