Hi, I'm wondering what's the best way to pick invalid package names from a package list. I am keeping a package list of my installed packages, but over the time, package can be retired, obsoleted, or simple increase in version in its name. I just want to pick out all those invalid ones. Thanks -- Tong (remove underscore(s) to reply) http://xpt.sourceforge.net/techdocs/ http://xpt.sourceforge.net/tools/