Autologin problem

Hi-- I'm trying to run the following command on the "/etc/rc.local" so it will run everytime (RedHat 7/PHP4/PostgreSQL): nohup su -c 'postmaster -i -D /usr/local/pgsql/data \ </dev/null >>server.log 2>>1 &' <username> The problem is that <username> has a password set, and since Linux doesn't ask for it when it's on the rc.local file, my command fails. Is there a way to include the password with the "su" command? Is there a way to CLEAR a user's password and set it to NULL? Julio Cuz, Jr. Riverside Community College jcuz@rccd.cc.ca.us