how to load dump file in postgresql code example

Example 1: postgres make sql dump

pg_dump -U username dbname > dbexport.pgsql

Example 2: how to take database dump in postgresql

pg_dump dbname > outfile

Example 3: psql load dump

psql databasename < data_base_dump

Example 4: populate db from command line postgres

\i 'path/to/file.sql'