SED is powerful. It can, besides many other things, substitute, append, remove characters or groups of characters or whole lines in a text file or the console output. You may find it difficult to use, but here is an excellent web page that will help you get going:
Have you ever heard of GARNOME? It’s an easy way to install the latest stable or CVS GNOME release without affecting the operating system. For example, a user can download GARNOME and build the whole GNOME desktop with some extra applications.
Gnome-blog-poster works, but there seems to be a bug (or a feature ;-)?): If I select “Self-Run WordPress” as a Blog-Type it always appends “wordpress/xmlrpc.php” at the end of the XML-RPC URL resulting in an error message about the URL being wrong.