postgresql set password for user code example

Example 1: alter user password postgres

ALTER USER user_name WITH PASSWORD 'new_password';

Example 2: setup password psql

sudo -u postgres psql postgres
\password postgres
\q

Example 3: set username and password for postgresql database

sudo -u postgres psql -c "ALTER USER postgres PASSWORD 'postgres';"

Example 4: create password for user in postgres

ALTER USER davide WITH PASSWORD 'hu8jmn3';