dpkg -L xfce4-settings | grep bin
/usr/bin
/usr/bin/xfce4-accessibility-settings
/usr/bin/xfce4-appearance-settings
/usr/bin/xfce4-display-settings
/usr/bin/xfce4-keyboard-settings
/usr/bin/xfce4-mime-settings
/usr/bin/xfce4-mouse-settings
/usr/bin/xfce4-settings-editor
/usr/bin/xfce4-settings-manager
/usr/bin/xfsettingsd