Format Output File By Command Spool

I use sqplus in oracle to output the command output to text file .

I use below set environment variable.

SQL> set echo off;
SQL> set linesize 3999;
SQL> set feedback off;
SQL> set feedback off;
SQL> set termout off;
SQL> set pagesize 0;
SQL> spool mapping.txt
select C_SIM_MSISDN,C_SIM_IMSI from RCA_SMART_CARD order by C_SIM_MSISDN;

In ouput file , it look like

SQL> select C_SIM_MSISDN,C_SIM_IMSI from RCA_SMART_CARD order by C_SIM_MSISDN;
060010007 10007
:
:
:
SQL> spool off;

any setting or command that allow me to remove the first sql command line" SQL>select XXXX" and the last command "SQL>spool off" after start up the "spool mapping.txt"