I found this can be changed via dconf, for those of you (like me) who don't use Gnome or Unity and can't access this hidden menu
$ dconf write /org/gnome/calculator/button-mode "'basic'"; gnome-calculator $ dconf write /org/gnome/calculator/button-mode "'advanced'"; gnome-calculator $ dconf write /org/gnome/calculator/button-mode "'programming'"; gnome-calculator $ dconf write /org/gnome/calculator/button-mode "'financial'"; gnome-calculator
I found this can be changed via dconf, for those of you (like me) who don't use Gnome or Unity and can't access this hidden menu
$ dconf write /org/gnome/ calculator/ button- mode "'basic'"; gnome-calculator calculator/ button- mode "'advanced'"; gnome-calculator calculator/ button- mode "'programming'"; gnome-calculator calculator/ button- mode "'financial'"; gnome-calculator
$ dconf write /org/gnome/
$ dconf write /org/gnome/
$ dconf write /org/gnome/