Backing up and restoring a postgreSQL database is easy from the CLI. Some people prefer using pgAdmin III however through the GUI and over a network will use a lot more resources so it is recommended to backup and restore via your Linux CLI. Follow the simple steps below to backup and restore one Postgres database from a Linux server to another Linux server.
- Backup One PostgreSQL Database: Login to your server and issue the below command from the CLI. In the below syntax change username to the correct username (such as postgres), the database_name to the proper database, and the filename to something meaningful. The filename should end in .sql so you know it is a postgreSQL backup file which will eventually end in .gz once you compress it using gzip.