I don't know if you've noticed, but in Peppermint if you hit the
PrtSc (Print Screen) key Peppermint takes a screenshot and saves it as a
.png in your
Home folder (but with an odd filename format).
PrtSc = Full Screenshot.
Alt+PrtSc = Interactively select a window or rectangle with the mouse.
I prefer my screenshots saved directly to my desktop by default .. if you're like me, here's how to do it ..
Not only will they save to your desktop, but they'll have the much more readable filename format -
Screenshot_2012-04-27_01:58:18.pngFYI, Peppermint uses an application called "scrot" for taking screenshot, and the key bindings are contained in your
~/.config/openbox/peppermint-rc.xmlfile.
OK, here goes

First backup your peppermint-rc.xml file:
cp -v ~/.config/openbox/peppermint-rc.xml ~/.config/openbox/peppermint-rc.xml.backup
Now open peppermint-rc.xml for editing:
gedit ~/.config/openbox/peppermint-rc.xml
Find the section that reads:-
<!-- Keybinding for PrintScreen Key --><keybind key="Print"><action name="Execute"><execute>scrot</execute></action></keybind><keybind key="A-Print"><action name="Execute"><execute>scrot -s</execute></action></keybind>
and change it to read:-
<!-- Keybinding for PrintScreen Key --><keybind key="Print"><action name="Execute"><execute>scrot "Screenshot_%Y-%m-%d_%H:%M:%S.png" -e "mv $f ~/Desktop/"</execute></action></keybind><keybind key="A-Print"><action name="Execute"><execute>scrot -s "Screenshot_%Y-%m-%d_%H:%M:%S.png" -e "mv $f ~/Desktop/"</execute></action></keybind>
SAVE the file.
Back in the terminal, run:
(to let openbox pick up the changes)
Done

Test both "prtSc" and "Alt+PrtSc" .. they should now save to the desktop not your home folder .. the screenshots will also be saved with a filename that makes more sense .. like
Screenshot_2012-04-27_01:58:18.png
To UNDO -
Run:
mv -v ~/.config/openbox/peppermint-rc.xml ~/.config/openbox/peppermint-rc.xml.edited
then
mv -v ~/.config/openbox/peppermint-rc.xml.backup ~/.config/openbox/peppermint-rc.xml
then
You're now be back to the way things were.