XSH is a powerfull command-line XML editing tool/programming language
in the manner of Unix shell interpreters and line-oriented text editors
like ed which can be used either interactively or for batch-mode
XML processing.
Advisory Check is a tool for monitoring the security of installed software.
It gathers security advisories using RSS/RDF/XML feeds, compares them against a list of known software, and alerts you if you're vulnerable.
Let advchk read advisories for you!