ImageMagick must be installed for this to work.
Create a file named screenshot, and paste this into it.
#!/bin/bash xwd -root | convert xwd:- ~/Desktop/screenshot.png
Run this command to make the file executable.
$ chmod +x screenshot
Run this command to move the file to /usr/bin.
# mv screenshot /usr/bin/screenshot
Open the Xfce menu -> Settings -> Keyboard Settings. Go to the Shortcuts tab, and add a new theme. Now add a shortcut; type screenshot for the command, and press the Print Screen key when it tells you to set the shortcut.
Now when someone posts yet another “show your desktop” thread, you won’t have to feel left out!