I found working instructions here.

1. Install imagemagick 2. $ convert originalimage.png -crop 100%x50% +repace output-page.png

-edit- this only works for gnome with compiz $ ccsm go to window border type the following in ‘Decoration windows’: !(class=Gnome-terminal)

Do: $ dbus-launch gsettings set org.gnome.desktop.session session-name ‘gnome-fallback’