There's a pretty detailed set of instructions for how to take screenshots under debian online. The first paragraph suggests that debian supports an inbuilt screenshot facility:Print Screen key to take a screenshot of the whole screen.Alt+Print Screen key to take a screenshot of the current active window.The instructions imply that when I press PrtScn I should see this popup.However, I am running Debian Jessie and when I press PrtScn I just hear a camera shutter sound and don't see a popup. I tried pasting into GIMP (edit->paste) but there was nothing on the clipboard.The fact that I'm hearing the shutter sound suggests that something is happening, but how do I get a copy of the image?
How do I take a screenshot while using Gnome?
gnome;screenshot
The screenshot recipe you are asking about uses the gnome-utils package. However, as you can check, the last Debian release that included that package was squeeze.Since the functionality you describe uses gnome-utils, and since that package is no longer in Debian, it is not surprising the method does not work.Additionally you can check the info tab of https://wiki.debian.org/ScreenShots, and you'll see the image from there that you include in your question was added in 2007. Summary: I recommend you use another method to obtain a screenshot. There are many such methods.