How to loop through tables in a schema in PostgreSQL and show estimated number of rows

To loop through all tables in a schema called "myschema", in a database called "proddb01" you can put the following in a script called "find_rows.sh":

for a in `echo "\t \dt+ myschema.*" | psql proddb01 | awk -F '[|]' '{ print $2 }'`; do
 echo "SELECT relname, reltuples::BIGINT AS estimate FROM pg_class WHERE relname='$a';" | psql proddb01
done

chmod 755 find_rows.sh
./find_rows.sh

Example output:

        relname           | estimate
----------------------------+----------
 table1                   |        0
(1 row)

           relname            | estimate
------------------------------+----------
 table2                       | 65525596
(1 row)

        relname        | estimate
-----------------------+-----------
 table3                | 153588080
(1 row)

      relname       | estimate
--------------------+----------
 table4             |        1
(1 row)