Según los docs
psql -c 'command;'
psql -c 'CREATE DATABASE myproject;' -c "CREATE USER myprojectuser WITH PASSWORD 'password';" -c 'GRANT ALL PRIVILEGES ON DATABASE myproject TO myprojectuser;'
Según los docs
psql -c 'command;'
psql -c 'CREATE DATABASE myproject;' -c "CREATE USER myprojectuser WITH PASSWORD 'password';" -c 'GRANT ALL PRIVILEGES ON DATABASE myproject TO myprojectuser;'