In Xubuntu 13.04 there is a Show Desktop panel plugin.
I'd like to make a keyboard shortcut for this functionality.
How can I activate Show Desktop with a terminal command?
Ah, found it for Xubuntu! No terminal command is needed.
The shortcut is in Settings Manager > Window Manager > Keyboard.
Originally I was only looking in Settings Manager > Keyboard > Application Shortcuts, thinking I needed to know the terminal command to use Show Desktop to apply it to a keyboard shortcut, but looks like I don't need to know the terminal command after all.
Thank you for your help, sorry for the confusion~
There is a tutorial which can be found at http://www.ubuntugeek.com/ubuntu-tiphow-to-show-desktop-from-command-line.html
This allows you to command line any key strokes like Ctrl+Alt+d or whatever keystrokes you want.
I believe that there may be a better way, I'll keep looking...