sqlplus output to file with out display and trims on

http://blog.niklasottosson.com/?p=761

http://stackoverflow.com/questions/6813210/oracle-sqlplus-saving-output-in-a-file-but-dont-show-on-screen

SET echo off

02	SET feedback off

03	SET linesize 100

04	SET pagesize 0

05	SET sqlprompt ''

06	SET trimspool on

07	SPOOL filename.csv

08

set Termout off

09	SELECT field1 || ',' || field2 || ',' || field3 FROM tablename;

10

11

SPOOL off

12

exit st