List generated locales

_$: locale -a

Check supported locales

_$: ls -la /var/lib/locales/supported.d/

Check default locale

_$: cat /etc/default/locale

Change default locale

_$: sudo update-locale LANG=en_US.UTF-8

Generate locales

_$: sudo locale-gen pt_BR
_$: sudo locale-gen pt_BR.UTF-8

Reconfigure locales

_$: sudo dpkg-reconfigure locales