where does pgadmin save backups in ubuntu code example

Example 1: where does pgadmin save backups in ubuntu

find / -name 'my_database.sql'

Example 2: where does pgadmin save backups in ubuntu

/var/lib/pgsql/my_database.sql

Example 3: where does pgadmin save backups in ubuntu

runuser -l postgres -c 'pg_dump my_database > my_database.sql'