How To Transfer Parameter Between Procedure And Shell

I created a procedure with cursor to inquiry a table. There is more than 1 million records on the table. For each record, I would like to transfer two columns on table as parameter to shell and feedback to procedure as varcahr2.

This is my sample(I only use 10 records for the testing).

create or replace procedure task_file(task_check in varchar2,file_name out varchar2) is
k number :=0;
v_task_number number :=0;
v_task_filename varchar2(30) := null;
cursor jobchk is select task_number,task_filename into v_task_number,v_task_filename from my.tasktable
where task_filename=task_check and rownum <=10;
[code]........