localectl status
# cat /etc/locale.conf
# localectl list-locales
# localectl list-locales | grep ru
localectl set-locale LANG=ru_RU.utf8
localectl set-x11-keymap us,ru , , grp:alt_shift_toggle
localectl set-keymap us,ru
localectl set-locale LANG=en_US.UTF-8
localectl set-keymap us,ru
localectl set-locale LANG=en_US.UTF-8
localectl set-keymap us