To all lazy guys....
Code:
$ alias s='sqlplus "/ as sysdba" '
$ s

SQL*Plus: Release 9.2.0.4.0 - Production on Mon Nov 22 17:18:56 2004

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production