Configure Linux OS with LATIN1 encode on Postgres

latin-iso_db_config

// add support to desire language/locale
sudo echo "pt_BR.ISO-8859-1 ISO-8859-1" >> /var/lib/locales/supported.d/local

// recompile locales to add support for OS
sudo dpkg-reconfigure locales

// before create DB, restart Postgres service
sudo service postgresql restart

// login in your postgres client
sudo su - postgres
psql

// create example db with some specific parameters
CREATE DATABASE db_with_LATIN1 ENCODING 'LATIN1' LC_COLLATE 'pt_BR.ISO-8859-1' LC_CTYPE 'pt_BR.ISO-8859-1' template template0;