If you are used to left-side Close, Minimize, Maximize buttons, then can be moved by editing dconf.
- If you are using Metacity (Gnome3 fallback), settings are located in:
org.gnome.desktop.wm.preferences.button-layout - If you are using Gnome3, settings are located in
org.gnome.shell.overrides
Contents of the given key must be:
close,minimize,maximize: