Calling anonymous block from Unix

Question

I have a very simple block of code I'm calling from a wrapping ksh script, it works well but I'm having a hard time getting output from PL/SQL back to my ksh script.
Output from $OUT1 is none
Please advise.
Script:
#!/bin/ksh
# Set environment
. ~/.profile
export ORACLE_SID=vastrp
sqlplus -s / as sysdba>$OUT1<<!
set serveroutput on size 1000000
DECLARE
scn_num number;
BEGIN
select max(next_change#)-1 into scn_num from v$archived_log where next_time > trunc(sysdate) and next_time < trunc(sysdate) + 5/1440;
dbms_output.put_line('SCN:' || to_char(scn_num));
dbms_output.put_line('Print NOW');
END;
exit;
echo $OUT1
exit
----------------------------------------------------------

Answer 1

Here is an example.
   1  i=`sqlplus -s xopmaster/xopmaster<< eof
2  set serverout on;
3  set feedback off;
4  set heading off;
5  exec dbms_output.put_line('Hello world');
6
7  exit;
8  eof`
9  echo $i
"test.sh" 9 lines, 155 characters
hdev1:/apps/home/> ./test.sh
Hello world