psql change password code example
Example 1: alter user password postgres
ALTER USER user_name WITH PASSWORD 'new_password';
Example 2: set username and password for postgresql database
sudo -u postgres psql -c "ALTER USER postgres PASSWORD 'postgres';"
Example 3: create password for user in postgres
ALTER USER davide WITH PASSWORD 'hu8jmn3';
Example 4: reset password postgres ubuntu
\password sde