SQL & PL/SQL

I have a humungous select statement stored in A.A_VAL_T. When I try to select the CLOB, I always get only 80 lines.  I need to retrieve the whole select statemnt in SQL*Plus.  Is that possible?  I ultimately want to pass the select from a bash shell to sql*plus.  I'm inexperienced with CLOB.  I've only worked with LONG data types in the past.

SQL> desc a
Name                                      Null?    Type
----------------------------------------- -------- -------------
A_APLN_T                               NOT NULL VARCHAR2(126)
A_KY_ID                                NOT NULL VARCHAR2(255)
A_VAL_T                                         CLOB
A_REC_MTN_TS                           NOT NULL DATE
A_REC_MTN_ID                           NOT NULL VARCHAR2(8)

SQL> SELECT a_val_t AS clob_col
  2  --    INTO x
  3  FROM a
  4  WHERE a_apln_t = 'TimeSlice' AND a_KY_ID = 'EDW';

CLOB_COL
--------------------------------------------------------------------------------
SELECT TO_CLOB(