Generic or better yet custom message of the day in Oracle sql plus
Anything like this?

$ cat $ORACLE_HOME/sqlplus/admin/glogin.sql
set serveroutput on feedback off
exec dbms_output.put_line('******************');
exec dbms_output.put_line('MESSAGE OF THE DAY');
exec dbms_output.put_line('******************');
set serveroutput off feedback on


Logging in:

$ sqlplus test/test

SQL*Plus: Release 11.2.0.4.0 Production on Sun Jan 26 00:49:29 2014

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, OLAP, Data Mining and Real Application Testing options

******************
MESSAGE OF THE DAY
******************
SQL&gt;