Change the window title buttons
The window title default buttons layout in GNOME 3 will show only a closing button on the right side. No more minimize, maximize and application menu buttons like in the previous GNOME releases.
The buttons layout on the window title bar can be restored or changed to any wanted combination using a single command inside a terminal window. The syntax for change the buttons layout is:
gconftool-2 --set --type str /desktop/gnome/shell/windows/button_layout "LEFT_SIDE:RIGHT_SIDE"