Echo sqlplus command without using prompts or scripts

I have a script which I want to maintain as a single file, however I wish to echo the commands input into sqlplus without using either PROMPT <sql> or @script.sql can this be done?

Current script:

$ cat test.sh
#!/bin/bash
LOG=/home/oracle/output.log
sqlplus hr/hr <<EOF > $LOG
set echo on
select 1 from dual;
QUIT
EOF`

Current output:

$ cat output.log
SQL*Plus: Release 11.2.0.4.0 Production on Tue Mar 1 15:01:12 2016
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining,
Oracle Database Vault and Real Application Testing options

SQL> SQL>
         1
----------
         1

What I want:

$ cat output.log

SQL*Plus: Release 11.2.0.4.0 Production on Tue Mar 1 15:02:02 2016

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining,
Oracle Database Vault and Real Application Testing options

SQL> SQL> SQL> select 1 from dual;

         1
----------
         1

Solution

try spool instead of redirecting your STDOUT:

#!/bin/bash
LOG=/home/oracle/output.log
sqlplus hr/hr <<EOF
set echo on term on 
spool $LOG
select 1 from dual;
QUIT
EOF