Restore dump with .backup extension (or other)

psql -h localhost -p 5433 -d dbName -U UserName -f pathToBackUp.backup

or

psql -h localhost -p 5433 -U user -d db_name < /directory/archive.sql

Source stackoverflow

Create backup

pg_dump -h localhost -p 5432 -U user -d db_name > backup_name.sql

Source stackoverflow