Postgres - database backup

In this short article, we would like to show how to make Postgres database backup from the command line under Linux. 

Quick solution:

pg_dump -h localhost -p 5432 -U my-username -W my-database > /path/to/backup.sql

Note: command will ask us to type the current username password.

To include SQL commands to clean (drop) databases before recreating them, use the following command (-c parameter):

pg_dump -c -h localhost -p 5432 -U my-username -W my-database > /path/to/backup.sql

Where:

• -c causes adding database clean queries to the generated dump,
• localhost and 5432 should be used according to Postgres server address (host and port),
• my-username should be replaced with current database credentials,
• -W causes displaying propmpt to type my-usernames' password,
• my-database indicates copied database,
• /path/to/backup.sql should be replaced with destinated backup file location.

Note: do not forget to check if Postgres is installed or run the installation command:
sudo apt install postgresql postgresql-contrib - for Debian / Ubuntu Linuxes