This version of xdg-utils contains the following commands:
xdg-desktop-menu: command line tool for (un)installing
desktop menu items
xdg-desktop-icon: command line tool for (un)installing
icons to the desktop
xdg-mime: command line tool for querying information
about file type handling and adding
descriptions for new file types
xdg-icon-resource: command line tool for (un)installing icon resources
xdg-open: opens a file or URL in the user's preferred
application
xdg-email: command line tool for sending mail using the user's
preferred
e-mail composer
xdg-su: run a program as root after prompting for the root
password
xdg-screensaver: command line tool for controlling the screensaver

Testsuite for xdg-utils is available from
http://portland.freedesktop.org/wiki/TestSuite