\dt (public|s).(s|t)
List of relations
Schema | Name | Type | Owner
--------+------+-------+-------
public | s | table | cpn
public | t | table | cpn
s | t | table | cpn
$psql mydatabase
mydatabase=# SET search_path TO public, usa; #schema examples
SET
mydatabase=# \dt
List of relations
Schema | Name | Type | Owner
--------+-----------------+-------+----------
public | counties | table | postgres
public | spatial_ref_sys | table | postgres
public | states | table | postgres
public | us_cities | table | postgres
usa | census2010 | table | postgres