- create a login.sql file for all your commands
- add the directory to the $SQLPATH env variable (on most client machines, you'll need to create the env var)
- launch sqlplus, and you should have all your options setup
My current login.sql looks like this:
set timing on
set serveroutput on
set colsep '|'
set linesize 120
Like I said, for the geeky, but damn handy when you don't want to muck with and IDE like TOAD.