Postgresql create/setup databases using the command line

gistfile1.txt

Linux shell:
```bash
sudo -u postgres psql -c "CREATE DATABASE optuna_db;"
sudo -u postgres psql -c "CREATE USER optuna_user WITH PASSWORD 'password';"
sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE optuna_db to optuna_user;"
```

Window:
```cmd
psql -U postgres -W -c "CREATE DATABASE optuna_db;"
psql -U postgres -W -c "CREATE USER optuna_user WITH PASSWORD 'password';"
psql -U postgres -W -c "GRANT ALL PRIVILEGES ON DATABASE optuna_db to optuna_user;"
```